WIP: materialize graph as Hive DB

dhp-workflows/dhp-dedup-openaire/src/test/java/eu/dnetlib/dhp/oa/dedup/SparkDedupTest.java

@@ -195,10 +195,10 @@ public class SparkDedupTest implements Serializable {
 			.count();
 
 		assertEquals(3432, orgs_simrel);
-		assertEquals(7152, pubs_simrel);
-		assertEquals(344, sw_simrel);
+		assertEquals(6944, pubs_simrel);
+		assertEquals(318, sw_simrel);
 		assertEquals(458, ds_simrel);
-		assertEquals(6750, orp_simrel);
+		assertEquals(6746, orp_simrel);
 	}
 
 	@Test
@@ -344,10 +344,10 @@ public class SparkDedupTest implements Serializable {
 			.count();
 
 		assertEquals(1276, orgs_mergerel);
-		assertEquals(1442, pubs_mergerel);
-		assertEquals(288, sw_mergerel);
+		assertEquals(1418, pubs_mergerel);
+		assertEquals(276, sw_mergerel);
 		assertEquals(472, ds_mergerel);
-		assertEquals(718, orp_mergerel);
+		assertEquals(716, orp_mergerel);
 	}
 
 	@Test
@@ -391,8 +391,8 @@ public class SparkDedupTest implements Serializable {
 			.count();
 
 		assertEquals(82, orgs_deduprecord);
-		assertEquals(66, pubs_deduprecord);
-		assertEquals(51, sw_deduprecord);
+		assertEquals(65, pubs_deduprecord);
+		assertEquals(50, sw_deduprecord);
 		assertEquals(96, ds_deduprecord);
 		assertEquals(89, orp_deduprecord);
 	}
@@ -473,11 +473,11 @@ public class SparkDedupTest implements Serializable {
 			.distinct()
 			.count();
 
-		assertEquals(897, publications);
+		assertEquals(896, publications);
 		assertEquals(835, organizations);
 		assertEquals(100, projects);
 		assertEquals(100, datasource);
-		assertEquals(200, softwares);
+		assertEquals(199, softwares);
 		assertEquals(388, dataset);
 		assertEquals(517, otherresearchproduct);
 
@@ -533,7 +533,7 @@ public class SparkDedupTest implements Serializable {
 
 		long relations = jsc.textFile(testDedupGraphBasePath + "/relation").count();
 
-		assertEquals(4866, relations);
+		assertEquals(4828, relations);
 
 		// check deletedbyinference
 		final Dataset<Relation> mergeRels = spark

dhp-workflows/dhp-dedup-openaire/src/test/java/eu/dnetlib/dhp/oa/dedup/SparkStatsTest.java

@@ -168,10 +168,10 @@ public class SparkStatsTest implements Serializable {
 			.textFile(testOutputBasePath + "/" + testActionSetId + "/otherresearchproduct_blockstats")
 			.count();
 
-		assertEquals(121, orgs_blocks);
-		assertEquals(110, pubs_blocks);
-		assertEquals(21, sw_blocks);
-		assertEquals(67, ds_blocks);
-		assertEquals(55, orp_blocks);
+		assertEquals(549, orgs_blocks);
+		assertEquals(868, pubs_blocks);
+		assertEquals(473, sw_blocks);
+		assertEquals(523, ds_blocks);
+		assertEquals(756, orp_blocks);
 	}
 }

dhp-workflows/dhp-dedup-openaire/src/test/resources/eu/dnetlib/dhp/dedup/conf/ds.curr.conf.json

@@ -17,8 +17,7 @@
   },
   "pace" : {
     "clustering" : [
-      { "name" : "ngrampairs", "fields" : [ "title" ], "params" : { "max" : "1", "ngramLen" : "3"} },
-      { "name" : "suffixprefix", "fields" : [ "title" ], "params" : { "max" : "1", "len" : "3" } },
+      { "name" : "wordsStatsSuffixPrefixChain", "fields" : [ "title" ], "params" : { "mod" : "10" } },
       { "name" : "lowercase", "fields" : [ "doi" ], "params" : { } }
     ],
     "decisionTree" : {

dhp-workflows/dhp-dedup-openaire/src/test/resources/eu/dnetlib/dhp/dedup/conf/orp.curr.conf.json

@@ -17,8 +17,7 @@
   },
   "pace" : {
     "clustering" : [
-      { "name" : "ngrampairs", "fields" : [ "title" ], "params" : { "max" : "1", "ngramLen" : "3"} },
-      { "name" : "suffixprefix", "fields" : [ "title" ], "params" : { "max" : "1", "len" : "3" } },
+      { "name" : "wordsStatsSuffixPrefixChain", "fields" : [ "title" ], "params" : { "mod" : "10" } },
       { "name" : "lowercase", "fields" : [ "doi" ], "params" : { } }
     ],
     "decisionTree" : {

dhp-workflows/dhp-dedup-openaire/src/test/resources/eu/dnetlib/dhp/dedup/conf/pub.curr.conf.json

@@ -29,8 +29,7 @@
   },
   "pace": {
     "clustering" : [
-      { "name" : "ngrampairs", "fields" : [ "title" ], "params" : { "max" : "1", "ngramLen" : "3"} },
-      { "name" : "suffixprefix", "fields" : [ "title" ], "params" : { "max" : "1", "len" : "3" } },
+      { "name" : "wordsStatsSuffixPrefixChain", "fields" : [ "title" ], "params" : { "mod" : "10" } },
       { "name" : "lowercase", "fields" : [ "doi" ], "params" : { } }
     ],
     "decisionTree": {

dhp-workflows/dhp-dedup-openaire/src/test/resources/eu/dnetlib/dhp/dedup/conf/sw.curr.conf.json

@@ -17,8 +17,7 @@
     },
     "pace" : {
       "clustering" : [
-        { "name" : "ngrampairs", "fields" : [ "title" ], "params" : { "max" : "1", "ngramLen" : "3"} },
-        { "name" : "suffixprefix", "fields" : [ "title" ], "params" : { "max" : "1", "len" : "3" } },
+        { "name" : "wordsStatsSuffixPrefixChain", "fields" : [ "title" ], "params" : { "mod" : "10" } },
         { "name" : "lowercase", "fields" : [ "doi" ], "params" : { } }
       ],
       "decisionTree": {

dhp-workflows/dhp-graph-mapper/pom.xml

@@ -71,6 +71,11 @@
             <artifactId>dhp-schemas</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>eu.dnetlib.dhp</groupId>
+            <artifactId>dhp-workflows-common</artifactId>
+            <version>${project.version}</version>
+        </dependency>
 
         <dependency>
             <groupId>com.jayway.jsonpath</groupId>

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/clean/CleanGraphSparkJob.java

@@ -1,9 +1,10 @@
 
 package eu.dnetlib.dhp.oa.graph.clean;
 
+import static eu.dnetlib.dhp.common.GraphSupport.*;
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkHiveSession;
 import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
 
-import java.io.BufferedInputStream;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Collectors;
@@ -14,7 +15,6 @@ import org.apache.spark.SparkConf;
 import org.apache.spark.api.java.function.MapFunction;
 import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Encoders;
-import org.apache.spark.sql.SaveMode;
 import org.apache.spark.sql.SparkSession;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -22,10 +22,8 @@ import org.slf4j.LoggerFactory;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.common.HdfsSupport;
+import eu.dnetlib.dhp.common.*;
 import eu.dnetlib.dhp.oa.graph.raw.AbstractMdRecordToOafMapper;
-import eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;
 import eu.dnetlib.dhp.utils.ISLookupClientFactory;
@@ -53,50 +51,64 @@ public class CleanGraphSparkJob {
 			.orElse(Boolean.TRUE);
 		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
 
-		String inputPath = parser.get("inputPath");
-		log.info("inputPath: {}", inputPath);
+		String inputGraph = parser.get("inputGraph");
+		log.info("inputGraph: {}", inputGraph);
 
-		String outputPath = parser.get("outputPath");
-		log.info("outputPath: {}", outputPath);
+		String outputGraph = parser.get("outputGraph");
+		log.info("outputGraph: {}", outputGraph);
 
-		String isLookupUrl = parser.get("isLookupUrl");
-		log.info("isLookupUrl: {}", isLookupUrl);
+		GraphFormat inputGraphFormat = Optional
+			.ofNullable(parser.get("inputGraphFormat"))
+			.map(GraphFormat::valueOf)
+			.orElse(GraphFormat.DEFAULT);
+		log.info("inputGraphFormat: {}", inputGraphFormat);
+
+		GraphFormat outputGraphFormat = Optional
+			.ofNullable(parser.get("outputGraphFormat"))
+			.map(GraphFormat::valueOf)
+			.orElse(GraphFormat.DEFAULT);
+		log.info("outputGraphFormat: {}", outputGraphFormat);
+
+		String isLookUpUrl = parser.get("isLookUpUrl");
+		log.info("isLookUpUrl: {}", isLookUpUrl);
 
 		String graphTableClassName = parser.get("graphTableClassName");
 		log.info("graphTableClassName: {}", graphTableClassName);
 
-		Class<? extends OafEntity> entityClazz = (Class<? extends OafEntity>) Class.forName(graphTableClassName);
-
-		final ISLookUpService isLookupService = ISLookupClientFactory.getLookUpService(isLookupUrl);
-		final VocabularyGroup vocs = VocabularyGroup.loadVocsFromIS(isLookupService);
+		String hiveMetastoreUris = parser.get("hiveMetastoreUris");
+		log.info("hiveMetastoreUris: {}", hiveMetastoreUris);
 
 		SparkConf conf = new SparkConf();
-		runWithSparkSession(
+		conf.set("hive.metastore.uris", hiveMetastoreUris);
+
+		Class<? extends Oaf> clazz = (Class<? extends Oaf>) Class.forName(graphTableClassName);
+
+		final ISLookUpService isLookupService = ISLookupClientFactory.getLookUpService(isLookUpUrl);
+		final VocabularyGroup vocs = VocabularyGroup.loadVocsFromIS(isLookupService);
+
+		runWithSparkHiveSession(
 			conf,
 			isSparkSessionManaged,
-			spark -> {
-				removeOutputDir(spark, outputPath);
-				fixGraphTable(spark, vocs, inputPath, entityClazz, outputPath);
-			});
+			spark -> cleanGraphTable(spark, vocs, inputGraph, inputGraphFormat, outputGraph, outputGraphFormat, clazz));
 	}
 
-	private static <T extends Oaf> void fixGraphTable(
+	private static <T extends Oaf> void cleanGraphTable(
 		SparkSession spark,
 		VocabularyGroup vocs,
-		String inputPath,
-		Class<T> clazz,
-		String outputPath) {
+		String inputGraph,
+		GraphFormat inputGraphFormat,
+		String outputGraph,
+		GraphFormat outputGraphFormat,
+		Class<T> clazz) {
 
 		final CleaningRuleMap mapping = CleaningRuleMap.create(vocs);
 
-		readTableFromPath(spark, inputPath, clazz)
+		Dataset<T> cleaned = readGraph(spark, inputGraph, clazz, inputGraphFormat)
 			.map((MapFunction<T, T>) value -> fixVocabularyNames(value), Encoders.bean(clazz))
 			.map((MapFunction<T, T>) value -> OafCleaner.apply(value, mapping), Encoders.bean(clazz))
-			.map((MapFunction<T, T>) value -> fixDefaults(value), Encoders.bean(clazz))
-			.write()
-			.mode(SaveMode.Overwrite)
-			.option("compression", "gzip")
-			.json(outputPath);
+			.map((MapFunction<T, T>) value -> fixDefaults(value), Encoders.bean(clazz));
+
+		saveGraphTable(cleaned, clazz, outputGraph, outputGraphFormat);
 	}
 
 	protected static <T extends Oaf> T fixVocabularyNames(T value) {

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphSparkJob.java

@@ -1,6 +1,9 @@
 
 package eu.dnetlib.dhp.oa.graph.merge;
 
+import static eu.dnetlib.dhp.common.GraphSupport.deleteGraphTable;
+import static eu.dnetlib.dhp.common.GraphSupport.saveGraphTable;
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkHiveSession;
 import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
 
 import java.util.Objects;
@@ -20,7 +23,8 @@ import org.slf4j.LoggerFactory;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.common.HdfsSupport;
+import eu.dnetlib.dhp.common.GraphFormat;
+import eu.dnetlib.dhp.common.GraphSupport;
 import eu.dnetlib.dhp.oa.graph.clean.CleanGraphSparkJob;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
 import eu.dnetlib.dhp.schema.oaf.*;
@@ -35,8 +39,6 @@ public class MergeGraphSparkJob {
 
 	private static final Logger log = LoggerFactory.getLogger(CleanGraphSparkJob.class);
 
-	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
-
 	private static final String PRIORITY_DEFAULT = "BETA"; // BETA | PROD
 
 	public static void main(String[] args) throws Exception {
@@ -60,46 +62,61 @@ public class MergeGraphSparkJob {
 			.orElse(Boolean.TRUE);
 		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
 
-		String betaInputPath = parser.get("betaInputPath");
-		log.info("betaInputPath: {}", betaInputPath);
+		String betaInputGraph = parser.get("betaInputGraph");
+		log.info("betaInputGraph: {}", betaInputGraph);
 
-		String prodInputPath = parser.get("prodInputPath");
-		log.info("prodInputPath: {}", prodInputPath);
+		String prodInputGraph = parser.get("prodInputGraph");
+		log.info("prodInputGraph: {}", prodInputGraph);
 
-		String outputPath = parser.get("outputPath");
-		log.info("outputPath: {}", outputPath);
+		String outputGraph = parser.get("outputGraph");
+		log.info("outputGraph: {}", outputGraph);
+
+		GraphFormat inputGraphFormat = Optional
+			.ofNullable(parser.get("inputGraphFormat"))
+			.map(GraphFormat::valueOf)
+			.orElse(GraphFormat.DEFAULT);
+		log.info("inputGraphFormat: {}", inputGraphFormat);
+
+		GraphFormat outputGraphFormat = Optional
+			.ofNullable(parser.get("outputGraphFormat"))
+			.map(GraphFormat::valueOf)
+			.orElse(GraphFormat.DEFAULT);
+		log.info("outputGraphFormat: {}", outputGraphFormat);
 
 		String graphTableClassName = parser.get("graphTableClassName");
 		log.info("graphTableClassName: {}", graphTableClassName);
 
-		Class<? extends OafEntity> entityClazz = (Class<? extends OafEntity>) Class.forName(graphTableClassName);
+		Class<? extends Oaf> clazz = (Class<? extends Oaf>) Class.forName(graphTableClassName);
+
+		String hiveMetastoreUris = parser.get("hiveMetastoreUris");
+		log.info("hiveMetastoreUris: {}", hiveMetastoreUris);
 
 		SparkConf conf = new SparkConf();
+		conf.set("hive.metastore.uris", hiveMetastoreUris);
 		conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer");
 		conf.registerKryoClasses(ModelSupport.getOafModelClasses());
 
-		runWithSparkSession(
+		runWithSparkHiveSession(
 			conf,
 			isSparkSessionManaged,
-			spark -> {
-				removeOutputDir(spark, outputPath);
-				mergeGraphTable(spark, priority, betaInputPath, prodInputPath, entityClazz, entityClazz, outputPath);
-			});
+			spark -> mergeGraphTable(
+				spark, priority, betaInputGraph, clazz, prodInputGraph, clazz, outputGraph, inputGraphFormat,
+				outputGraphFormat));
 	}
 
 	private static <P extends Oaf, B extends Oaf> void mergeGraphTable(
 		SparkSession spark,
 		String priority,
-		String betaInputPath,
-		String prodInputPath,
-		Class<P> p_clazz,
+		String betaInputGraph,
 		Class<B> b_clazz,
-		String outputPath) {
+		String prodInputGraph,
+		Class<P> p_clazz,
+		String outputGraph, GraphFormat inputGraphFormat, GraphFormat outputGraphFormat) {
 
-		Dataset<Tuple2<String, B>> beta = readTableFromPath(spark, betaInputPath, b_clazz);
-		Dataset<Tuple2<String, P>> prod = readTableFromPath(spark, prodInputPath, p_clazz);
+		Dataset<Tuple2<String, B>> beta = readGraph(spark, betaInputGraph, b_clazz, inputGraphFormat);
+		Dataset<Tuple2<String, P>> prod = readGraph(spark, prodInputGraph, p_clazz, inputGraphFormat);
 
-		prod
+		Dataset<P> merged = prod
 			.joinWith(beta, prod.col("_1").equalTo(beta.col("_1")), "full_outer")
 			.map((MapFunction<Tuple2<Tuple2<String, P>, Tuple2<String, B>>, P>) value -> {
 				Optional<P> p = Optional.ofNullable(value._1()).map(Tuple2::_2);
@@ -112,11 +129,9 @@ public class MergeGraphSparkJob {
 						return mergeWithPriorityToPROD(p, b);
 				}
 			}, Encoders.bean(p_clazz))
-			.filter((FilterFunction<P>) Objects::nonNull)
-			.write()
-			.mode(SaveMode.Overwrite)
-			.option("compression", "gzip")
-			.json(outputPath);
+			.filter((FilterFunction<P>) Objects::nonNull);
+
+		saveGraphTable(merged, p_clazz, outputGraph, outputGraphFormat);
 	}
 
 	private static <P extends Oaf, B extends Oaf> P mergeWithPriorityToPROD(Optional<P> p, Optional<B> b) {
@@ -139,24 +154,16 @@ public class MergeGraphSparkJob {
 		return null;
 	}
 
-	private static <T extends Oaf> Dataset<Tuple2<String, T>> readTableFromPath(
-		SparkSession spark, String inputEntityPath, Class<T> clazz) {
+	private static <T extends Oaf> Dataset<Tuple2<String, T>> readGraph(
+		SparkSession spark, String inputGraph, Class<T> clazz, GraphFormat inputGraphFormat) {
 
-		log.info("Reading Graph table from: {}", inputEntityPath);
-		return spark
-			.read()
-			.textFile(inputEntityPath)
-			.map(
-				(MapFunction<String, Tuple2<String, T>>) value -> {
-					final T t = OBJECT_MAPPER.readValue(value, clazz);
+		log.info("Reading Graph table from: {}", inputGraph);
+		return GraphSupport
+			.readGraph(spark, inputGraph, clazz, inputGraphFormat)
+			.map((MapFunction<T, Tuple2<String, T>>) t -> {
 				final String id = ModelSupport.idFn().apply(t);
 				return new Tuple2<>(id, t);
-				},
-				Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
-	}
-
-	private static void removeOutputDir(SparkSession spark, String path) {
-		HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
+			}, Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
 	}
 
 }

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java

@@ -1,7 +1,7 @@
 
 package eu.dnetlib.dhp.oa.graph.raw;
 
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.*;
+import static eu.dnetlib.dhp.common.OafMapperUtils.*;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.*;
 
 import java.util.*;
@@ -12,7 +12,7 @@ import org.dom4j.DocumentFactory;
 import org.dom4j.DocumentHelper;
 import org.dom4j.Node;
 
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.common.LicenseComparator;
 import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/GenerateEntitiesApplication.java

@@ -27,7 +27,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.common.HdfsSupport;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
 import eu.dnetlib.dhp.schema.oaf.Dataset;
 import eu.dnetlib.dhp.schema.oaf.Datasource;
@@ -70,10 +70,10 @@ public class GenerateEntitiesApplication {
 		final String targetPath = parser.get("targetPath");
 		log.info("targetPath: {}", targetPath);
 
-		final String isLookupUrl = parser.get("isLookupUrl");
-		log.info("isLookupUrl: {}", isLookupUrl);
+		final String isLookUpUrl = parser.get("isLookUpUrl");
+		log.info("isLookUpUrl: {}", isLookUpUrl);
 
-		final ISLookUpService isLookupService = ISLookupClientFactory.getLookUpService(isLookupUrl);
+		final ISLookUpService isLookupService = ISLookupClientFactory.getLookUpService(isLookUpUrl);
 		final VocabularyGroup vocs = VocabularyGroup.loadVocsFromIS(isLookupService);
 
 		final SparkConf conf = new SparkConf();

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/MergeClaimsApplication.java

@@ -1,7 +1,8 @@
 
 package eu.dnetlib.dhp.oa.graph.raw;
 
-import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
+import static eu.dnetlib.dhp.common.GraphSupport.*;
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkHiveSession;
 
 import java.util.Objects;
 import java.util.Optional;
@@ -9,29 +10,23 @@ import java.util.Optional;
 import org.apache.commons.io.IOUtils;
 import org.apache.spark.SparkConf;
 import org.apache.spark.api.java.JavaSparkContext;
-import org.apache.spark.api.java.function.FilterFunction;
 import org.apache.spark.api.java.function.MapFunction;
 import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Encoders;
-import org.apache.spark.sql.SaveMode;
 import org.apache.spark.sql.SparkSession;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.common.HdfsSupport;
+import eu.dnetlib.dhp.common.GraphFormat;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
-import eu.dnetlib.dhp.schema.oaf.*;
+import eu.dnetlib.dhp.schema.oaf.Oaf;
 import scala.Tuple2;
 
 public class MergeClaimsApplication {
 
 	private static final Logger log = LoggerFactory.getLogger(MergeClaimsApplication.class);
 
-	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
-
 	public static void main(final String[] args) throws Exception {
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
 			IOUtils
@@ -53,49 +48,47 @@ public class MergeClaimsApplication {
 		final String claimsGraphPath = parser.get("claimsGraphPath");
 		log.info("claimsGraphPath: {}", claimsGraphPath);
 
-		final String outputRawGaphPath = parser.get("outputRawGaphPath");
-		log.info("outputRawGaphPath: {}", outputRawGaphPath);
+		final String outputGraph = parser.get("outputGraph");
+		log.info("outputGraph: {}", outputGraph);
+
+		final GraphFormat format = Optional
+			.ofNullable(parser.get("format"))
+			.map(GraphFormat::valueOf)
+			.orElse(GraphFormat.DEFAULT);
+		log.info("graphFormat: {}", format);
 
 		String graphTableClassName = parser.get("graphTableClassName");
 		log.info("graphTableClassName: {}", graphTableClassName);
 
 		Class<? extends Oaf> clazz = (Class<? extends Oaf>) Class.forName(graphTableClassName);
 
+		String hiveMetastoreUris = parser.get("hiveMetastoreUris");
+		log.info("hiveMetastoreUris: {}", hiveMetastoreUris);
+
 		SparkConf conf = new SparkConf();
+		conf.set("hive.metastore.uris", hiveMetastoreUris);
 		conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer");
 		conf.registerKryoClasses(ModelSupport.getOafModelClasses());
 
-		runWithSparkSession(
+		runWithSparkHiveSession(
 			conf,
 			isSparkSessionManaged,
-			spark -> {
-				String type = clazz.getSimpleName().toLowerCase();
-
-				String rawPath = rawGraphPath + "/" + type;
-				String claimPath = claimsGraphPath + "/" + type;
-				String outPath = outputRawGaphPath + "/" + type;
-
-				removeOutputDir(spark, outPath);
-				mergeByType(spark, rawPath, claimPath, outPath, clazz);
-			});
+			spark -> mergeByType(spark, rawGraphPath, claimsGraphPath, outputGraph, format, clazz));
 	}
 
 	private static <T extends Oaf> void mergeByType(
-		SparkSession spark, String rawPath, String claimPath, String outPath, Class<T> clazz) {
-		Dataset<Tuple2<String, T>> raw = readFromPath(spark, rawPath, clazz)
+		SparkSession spark, String rawPath, String claimPath, String outputGraph, GraphFormat format, Class<T> clazz) {
+		Dataset<Tuple2<String, T>> raw = readGraphJSON(spark, rawPath, clazz)
 			.map(
 				(MapFunction<T, Tuple2<String, T>>) value -> new Tuple2<>(ModelSupport.idFn().apply(value), value),
 				Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
 
-		final JavaSparkContext jsc = JavaSparkContext.fromSparkContext(spark.sparkContext());
-		Dataset<Tuple2<String, T>> claim = jsc
-			.broadcast(readFromPath(spark, claimPath, clazz))
-			.getValue()
+		Dataset<Tuple2<String, T>> claim = readGraphJSON(spark, claimPath, clazz)
 			.map(
 				(MapFunction<T, Tuple2<String, T>>) value -> new Tuple2<>(ModelSupport.idFn().apply(value), value),
 				Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
 
-		raw
+		Dataset<T> merged = raw
 			.joinWith(claim, raw.col("_1").equalTo(claim.col("_1")), "full_outer")
 			.map(
 				(MapFunction<Tuple2<Tuple2<String, T>, Tuple2<String, T>>, T>) value -> {
@@ -107,28 +100,9 @@ public class MergeClaimsApplication {
 						: opClaim.isPresent() ? opClaim.get()._2() : null;
 				},
 				Encoders.bean(clazz))
-			.filter(Objects::nonNull)
-			.map(
-				(MapFunction<T, String>) value -> OBJECT_MAPPER.writeValueAsString(value),
-				Encoders.STRING())
-			.write()
-			.mode(SaveMode.Overwrite)
-			.option("compression", "gzip")
-			.text(outPath);
+			.filter(Objects::nonNull);
+
+		saveGraphTable(merged, clazz, outputGraph, format);
 	}
 
-	private static <T extends Oaf> Dataset<T> readFromPath(
-		SparkSession spark, String path, Class<T> clazz) {
-		return spark
-			.read()
-			.textFile(path)
-			.map(
-				(MapFunction<String, T>) value -> OBJECT_MAPPER.readValue(value, clazz),
-				Encoders.bean(clazz))
-			.filter((FilterFunction<T>) value -> Objects.nonNull(ModelSupport.idFn().apply(value)));
-	}
-
-	private static void removeOutputDir(SparkSession spark, String path) {
-		HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
-	}
 }

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplication.java

@@ -1,15 +1,7 @@
 
 package eu.dnetlib.dhp.oa.graph.raw;
 
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.asString;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.createOpenaireId;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.dataInfo;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.field;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.journal;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.listFields;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.listKeyValues;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.qualifier;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.structuredProperty;
+import static eu.dnetlib.dhp.common.OafMapperUtils.*;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.DATASET_DEFAULT_RESULTTYPE;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.DATASOURCE_ORGANIZATION;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.DNET_PROVENANCE_ACTIONS;
@@ -53,9 +45,9 @@ import org.slf4j.LoggerFactory;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.common.DbClient;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.oa.graph.raw.common.AbstractMigrationApplication;
 import eu.dnetlib.dhp.oa.graph.raw.common.VerifyNsPrefixPredicate;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.oaf.Context;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.Dataset;

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OafToOafMapper.java

@@ -1,9 +1,7 @@
 
 package eu.dnetlib.dhp.oa.graph.raw;
 
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.createOpenaireId;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.field;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.structuredProperty;
+import static eu.dnetlib.dhp.common.OafMapperUtils.*;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.*;
 
 import java.util.ArrayList;
@@ -18,7 +16,7 @@ import org.dom4j.Node;
 import com.google.common.collect.Lists;
 
 import eu.dnetlib.dhp.common.PacePerson;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.oaf.Author;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.Field;

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java

@@ -1,9 +1,7 @@
 
 package eu.dnetlib.dhp.oa.graph.raw;
 
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.createOpenaireId;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.field;
-import static eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils.structuredProperty;
+import static eu.dnetlib.dhp.common.OafMapperUtils.*;
 import static eu.dnetlib.dhp.schema.common.ModelConstants.*;
 
 import java.util.ArrayList;
@@ -19,7 +17,7 @@ import org.dom4j.Node;
 import com.google.common.collect.Lists;
 
 import eu.dnetlib.dhp.common.PacePerson;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.oaf.Author;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.Field;

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/clean/oozie_app/config-default.xml

@@ -15,4 +15,8 @@
         <name>oozie.action.sharelib.for.spark</name>
         <value>spark2</value>
     </property>
+    <property>
+        <name>hiveMetastoreUris</name>
+        <value>thrift://iis-cdh5-test-m3.ocean.icm.edu.pl:9083</value>
+    </property>
 </configuration>

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/clean/oozie_app/workflow.xml

@@ -2,18 +2,32 @@
 
     <parameters>
         <property>
-            <name>graphInputPath</name>
-            <description>the input path to read graph content</description>
+            <name>inputGraph</name>
+            <description>the input graph name (or path)</description>
         </property>
         <property>
-            <name>graphOutputPath</name>
-            <description>the target path to store cleaned graph</description>
+            <name>outputGraph</name>
+            <description>the output graph name (or path)</description>
         </property>
         <property>
-            <name>isLookupUrl</name>
+            <name>isLookUpUrl</name>
             <description>the address of the lookUp service</description>
         </property>
+        <property>
+            <name>inputGraphFormat</name>
+            <value>HIVE</value>
+            <description>the input graph data format</description>
+        </property>
+        <property>
+            <name>outputGraphFormat</name>
+            <value>HIVE</value>
+            <description>the output graph data format</description>
+        </property>
 
+        <property>
+            <name>hiveMetastoreUris</name>
+            <description>hive server metastore URIs</description>
+        </property>
         <property>
             <name>sparkDriverMemory</name>
             <description>memory for driver process</description>
@@ -48,14 +62,70 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+            <name>sparkSqlWarehouseDir</name>
+            <value>spark 2.* db directory location</value>
+        </property>
     </parameters>
 
-	<start to="fork_clean_graph"/>
+    <global>
+        <job-tracker>${jobTracker}</job-tracker>
+        <name-node>${nameNode}</name-node>
+        <configuration>
+            <property>
+                <name>mapreduce.job.queuename</name>
+                <value>${queueName}</value>
+            </property>
+            <property>
+                <name>oozie.launcher.mapred.job.queue.name</name>
+                <value>${oozieLauncherQueueName}</value>
+            </property>
+            <property>
+                <name>oozie.action.sharelib.for.spark</name>
+                <value>${oozieActionShareLibForSpark2}</value>
+            </property>
+        </configuration>
+    </global>
+
+	<start to="should_drop_db"/>
 
     <kill name="Kill">
         <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
     </kill>
 
+    <decision name="should_drop_db">
+        <switch>
+            <case to="fork_clean_graph">${wf:conf('outputGraphFormat') eq 'JSON'}</case>
+            <case to="reset_DB">${wf:conf('outputGraphFormat') eq 'HIVE'}</case>
+            <default to="reset_DB"/>
+        </switch>
+    </decision>
+
+    <action name="reset_DB">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>reset_DB</name>
+            <class>eu.dnetlib.dhp.common.ResetHiveDbApplication</class>
+            <jar>dhp-graph-mapper-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-memory ${sparkExecutorMemory}
+                --executor-cores ${sparkExecutorCores}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
+                --conf spark.sql.shuffle.partitions=7680
+            </spark-opts>
+            <arg>--dbName</arg><arg>${outputGraph}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
+        </spark>
+        <ok to="fork_clean_graph"/>
+        <error to="Kill"/>
+    </action>
+
     <fork name="fork_clean_graph">
         <path start="clean_publication"/>
         <path start="clean_dataset"/>
@@ -82,12 +152,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/publication</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/publication</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Publication</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -108,12 +182,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/dataset</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/dataset</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Dataset</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -134,12 +212,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/otherresearchproduct</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/otherresearchproduct</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.OtherResearchProduct</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -160,12 +242,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/software</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/software</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Software</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -186,12 +272,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/datasource</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/datasource</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Datasource</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -212,12 +302,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/organization</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/organization</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Organization</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -238,12 +332,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/project</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/project</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Project</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>
@@ -264,12 +362,16 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--inputPath</arg><arg>${graphInputPath}/relation</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/relation</arg>
+            <arg>--inputGraph</arg><arg>${inputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Relation</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_clean"/>
         <error to="Kill"/>

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/generate_entities_parameters.json

@@ -19,7 +19,7 @@
 	},
 	{
 		"paramName": "isu",
-		"paramLongName": "isLookupUrl",
+		"paramLongName": "isLookUpUrl",
 		"paramDescription": "the url of the ISLookupService",
 		"paramRequired": true
 	}

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/hive/oozie_app/config-default.xml

@@ -11,6 +11,10 @@
         <name>oozie.use.system.libpath</name>
         <value>true</value>
     </property>
+    <property>
+        <name>oozie.action.sharelib.for.spark</name>
+        <value>spark2</value>
+    </property>
     <property>
         <name>hiveMetastoreUris</name>
         <value>thrift://iis-cdh5-test-m3.ocean.icm.edu.pl:9083</value>
@@ -19,8 +23,4 @@
         <name>hiveJdbcUrl</name>
         <value>jdbc:hive2://iis-cdh5-test-m3.ocean.icm.edu.pl:10000</value>
     </property>
-    <property>
-        <name>hiveDbName</name>
-        <value>openaire</value>
-    </property>
 </configuration>

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/hive/oozie_app/workflow.xml

@@ -51,6 +51,10 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+            <name>sparkSqlWarehouseDir</name>
+            <value>spark 2.* db directory location</value>
+        </property>
     </parameters>
 
     <global>

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/input_clean_graph_parameters.json

@@ -6,20 +6,32 @@
     "paramRequired": false
   },
   {
-    "paramName": "in",
-    "paramLongName": "inputPath",
-    "paramDescription": "the path to the graph data dump to read",
+    "paramName": "ig",
+    "paramLongName": "inputGraph",
+    "paramDescription": "the input graph name (or path)",
     "paramRequired": true
   },
   {
-    "paramName": "out",
-    "paramLongName": "outputPath",
-    "paramDescription": "the path to store the output graph",
+    "paramName": "og",
+    "paramLongName": "outputGraph",
+    "paramDescription": "the output graph name (or path)",
+    "paramRequired": true
+  },
+  {
+    "paramName": "igf",
+    "paramLongName": "inputGraphFormat",
+    "paramDescription": "the input graph data format",
+    "paramRequired": true
+  },
+  {
+    "paramName": "ogf",
+    "paramLongName": "outputGraphFormat",
+    "paramDescription": "the output graph data format",
     "paramRequired": true
   },
   {
     "paramName": "isu",
-    "paramLongName": "isLookupUrl",
+    "paramLongName": "isLookUpUrl",
     "paramDescription": "url to the ISLookup Service",
     "paramRequired": true
   },
@@ -28,5 +40,11 @@
     "paramLongName": "graphTableClassName",
     "paramDescription": "class name moelling the graph table",
     "paramRequired": true
+  },
+  {
+    "paramName": "hmu",
+    "paramLongName": "hiveMetastoreUris",
+    "paramDescription": "the hive metastore uris",
+    "paramRequired": true
   }
 ]

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/merge/oozie_app/workflow.xml

@@ -2,22 +2,36 @@
 
     <parameters>
         <property>
-            <name>betaInputGgraphPath</name>
-            <description>the beta graph root path</description>
+            <name>betaInputGraph</name>
+            <description>the beta graph name (or path)</description>
         </property>
         <property>
-            <name>prodInputGgraphPath</name>
-            <description>the production graph root path</description>
+            <name>prodInputGraph</name>
+            <description>the production graph name (or path)</description>
         </property>
         <property>
-            <name>graphOutputPath</name>
-            <description>the output merged graph root path</description>
+            <name>outputGraph</name>
+            <description>the merged graph name (or path)</description>
         </property>
         <property>
             <name>priority</name>
             <description>decides from which infrastructure the content must win in case of ID clash</description>
         </property>
+        <property>
+            <name>inputGraphFormat</name>
+            <value>HIVE</value>
+            <description>the input graph data format</description>
+        </property>
+        <property>
+            <name>outputGraphFormat</name>
+            <value>HIVE</value>
+            <description>the output graph data format</description>
+        </property>
 
+        <property>
+            <name>hiveMetastoreUris</name>
+            <description>hive server metastore URIs</description>
+        </property>
         <property>
             <name>sparkDriverMemory</name>
             <description>memory for driver process</description>
@@ -52,14 +66,51 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+            <name>sparkSqlWarehouseDir</name>
+            <value>spark 2.* db directory location</value>
+        </property>
     </parameters>
 
-	<start to="fork_merge_graph"/>
+	<start to="should_drop_db"/>
 
     <kill name="Kill">
         <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
     </kill>
 
+    <decision name="should_drop_db">
+        <switch>
+            <case to="fork_merge_graph">${wf:conf('outputGraphFormat') eq 'JSON'}</case>
+            <case to="reset_DB">${wf:conf('outputGraphFormat') eq 'HIVE'}</case>
+            <default to="reset_DB"/>
+        </switch>
+    </decision>
+
+    <action name="reset_DB">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>reset_DB</name>
+            <class>eu.dnetlib.dhp.common.ResetHiveDbApplication</class>
+            <jar>dhp-graph-mapper-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-memory ${sparkExecutorMemory}
+                --executor-cores ${sparkExecutorCores}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
+                --conf spark.sql.shuffle.partitions=7680
+            </spark-opts>
+            <arg>--dbName</arg><arg>${outputGraph}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
+        </spark>
+        <ok to="fork_merge_graph"/>
+        <error to="Kill"/>
+    </action>
+
     <fork name="fork_merge_graph">
         <path start="merge_publication"/>
         <path start="merge_dataset"/>
@@ -86,13 +137,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/publication</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/publication</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/publication</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Publication</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -113,13 +168,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/dataset</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/dataset</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/dataset</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Dataset</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -140,13 +199,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/otherresearchproduct</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/otherresearchproduct</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/otherresearchproduct</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.OtherResearchProduct</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -167,13 +230,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/software</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/software</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/software</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Software</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -194,13 +261,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/datasource</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/datasource</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/datasource</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Datasource</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -221,13 +292,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/organization</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/organization</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/organization</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Organization</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -248,13 +323,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/project</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/project</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/project</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Project</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -275,13 +354,17 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
-            <arg>--betaInputPath</arg><arg>${betaInputGgraphPath}/relation</arg>
-            <arg>--prodInputPath</arg><arg>${prodInputGgraphPath}/relation</arg>
-            <arg>--outputPath</arg><arg>${graphOutputPath}/relation</arg>
+            <arg>--betaInputGraph</arg><arg>${betaInputGraph}</arg>
+            <arg>--prodInputGraph</arg><arg>${prodInputGraph}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--inputGraphFormat</arg><arg>${inputGraphFormat}</arg>
+            <arg>--outputGraphFormat</arg><arg>${outputGraphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Relation</arg>
             <arg>--priority</arg><arg>${priority}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/merge_claims_parameters.json

@@ -6,21 +6,27 @@
 		"paramRequired": false
 	},
 	{
-		"paramName": "rgp",
-		"paramLongName": "rawGraphPath",
-		"paramDescription": "the raw graph path",
+		"paramName": "og",
+		"paramLongName": "outputGraph",
+		"paramDescription": "the output graph (db name | path)",
+		"paramRequired": true
+	},
+	{
+		"paramName": "gf",
+		"paramLongName": "graphFormat",
+		"paramDescription": "graph save format (json|parquet)",
 		"paramRequired": true
 	},
 	{
 		"paramName": "cgp",
 		"paramLongName": "claimsGraphPath",
-		"paramDescription": "the path of the claims graph",
+		"paramDescription": "the path of the claims graph, from the working directory",
 		"paramRequired": true
 	},
 	{
-		"paramName": "ogp",
-		"paramLongName": "outputRawGaphPath",
-		"paramDescription": "the path of output graph, combining raw and claims",
+		"paramName": "rgp",
+		"paramLongName": "rawGraphPath",
+		"paramDescription": "the path of raw graph, from the working directory",
 		"paramRequired": true
 	},
 	{
@@ -28,5 +34,11 @@
 		"paramLongName": "graphTableClassName",
 		"paramDescription": "class name associated to the input entity path",
 		"paramRequired": true
+	},
+	{
+		"paramName": "hmu",
+		"paramLongName": "hiveMetastoreUris",
+		"paramDescription": "the hive metastore uris",
+		"paramRequired": true
 	}
 ]

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/merge_graphs_parameters.json

@@ -7,20 +7,32 @@
 	},
 	{
 		"paramName": "bin",
-		"paramLongName": "betaInputPath",
-		"paramDescription": "the beta graph root path",
+		"paramLongName": "betaInputGraph",
+		"paramDescription": "the beta graph name (or path)",
 		"paramRequired": true
 	},
 	{
 		"paramName": "pin",
-		"paramLongName": "prodInputPath",
-		"paramDescription": "the production graph root path",
+		"paramLongName": "prodInputGraph",
+		"paramDescription": "the production graph name (or path)",
 		"paramRequired": true
 	},
 	{
 		"paramName": "out",
-		"paramLongName": "outputPath",
-		"paramDescription": "the output merged graph root path",
+		"paramLongName": "outputGraph",
+		"paramDescription": "the output merged graph (or path)",
+		"paramRequired": true
+	},
+	{
+		"paramName": "igf",
+		"paramLongName": "inputGraphFormat",
+		"paramDescription": "the format of the input graphs",
+		"paramRequired": true
+	},
+	{
+		"paramName": "ogf",
+		"paramLongName": "outputGraphFormat",
+		"paramDescription": "the format of the output merged graph",
 		"paramRequired": true
 	},
 	{
@@ -34,5 +46,11 @@
 		"paramLongName": "priority",
 		"paramDescription": "decides from which infrastructure the content must win in case of ID clash",
 		"paramRequired": false
+	},
+	{
+		"paramName": "hmu",
+		"paramLongName": "hiveMetastoreUris",
+		"paramDescription": "the hive metastore uris",
+		"paramRequired": true
 	}
 ]

dhp-workflows/dhp-graph-mapper/src/main/resources/eu/dnetlib/dhp/oa/graph/raw_all/oozie_app/workflow.xml

@@ -2,8 +2,13 @@
 
     <parameters>
         <property>
-            <name>graphOutputPath</name>
-            <description>the target path to store raw graph</description>
+            <name>outputGraph</name>
+            <description>the target graph name (or path)</description>
+        </property>
+        <property>
+            <name>graphFormat</name>
+            <value>HIVE</value>
+            <description>the graph data format</description>
         </property>
         <property>
             <name>reuseContent</name>
@@ -40,7 +45,7 @@
             <description>mongo database</description>
         </property>
         <property>
-            <name>isLookupUrl</name>
+            <name>isLookUpUrl</name>
             <description>the address of the lookUp service</description>
         </property>
         <property>
@@ -48,6 +53,11 @@
             <value></value>
             <description>a blacklist of nsprefixes (comma separeted)</description>
         </property>
+
+        <property>
+            <name>hiveMetastoreUris</name>
+            <description>hive server metastore URIs</description>
+        </property>
         <property>
             <name>sparkDriverMemory</name>
             <description>memory for driver process</description>
@@ -82,6 +92,10 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+            <name>sparkSqlWarehouseDir</name>
+            <value>spark 2.* db directory location</value>
+        </property>
     </parameters>
 
     <global>
@@ -132,7 +146,7 @@
             <arg>--postgresUrl</arg><arg>${postgresURL}</arg>
             <arg>--postgresUser</arg><arg>${postgresUser}</arg>
             <arg>--postgresPassword</arg><arg>${postgresPassword}</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
             <arg>--action</arg><arg>claims</arg>
             <arg>--dbschema</arg><arg>${dbSchema}</arg>
             <arg>--nsPrefixBlacklist</arg><arg>${nsPrefixBlacklist}</arg>
@@ -185,7 +199,7 @@
             <arg>--postgresUrl</arg><arg>${postgresURL}</arg>
             <arg>--postgresUser</arg><arg>${postgresUser}</arg>
             <arg>--postgresPassword</arg><arg>${postgresPassword}</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
             <arg>--dbschema</arg><arg>${dbSchema}</arg>
             <arg>--nsPrefixBlacklist</arg><arg>${nsPrefixBlacklist}</arg>
         </java>
@@ -269,7 +283,7 @@
             </spark-opts>
             <arg>--sourcePaths</arg><arg>${contentPath}/db_claims,${contentPath}/oaf_claims,${contentPath}/odf_claims,${contentPath}/oaf_records_invisible</arg>
             <arg>--targetPath</arg><arg>${workingDir}/entities_claim</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
         </spark>
         <ok to="GenerateGraph_claims"/>
         <error to="Kill"/>
@@ -316,7 +330,7 @@
             </spark-opts>
             <arg>--sourcePaths</arg><arg>${contentPath}/db_records,${contentPath}/oaf_records,${contentPath}/odf_records</arg>
             <arg>--targetPath</arg><arg>${workingDir}/entities</arg>
-            <arg>--isLookupUrl</arg><arg>${isLookupUrl}</arg>
+            <arg>--isLookUpUrl</arg><arg>${isLookUpUrl}</arg>
         </spark>
         <ok to="GenerateGraph"/>
         <error to="Kill"/>
@@ -346,7 +360,40 @@
         <error to="Kill"/>
     </action>
 
-    <join name="wait_graphs" to="fork_merge_claims"/>
+    <join name="wait_graphs" to="should_drop_db"/>
+
+    <decision name="should_drop_db">
+        <switch>
+            <case to="fork_merge_claims">${wf:conf('graphFormat') eq 'JSON'}</case>
+            <case to="reset_DB">${wf:conf('graphFormat') eq 'HIVE'}</case>
+            <default to="reset_DB"/>
+        </switch>
+    </decision>
+
+    <action name="reset_DB">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>reset_DB</name>
+            <class>eu.dnetlib.dhp.common.ResetHiveDbApplication</class>
+            <jar>dhp-graph-mapper-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-memory ${sparkExecutorMemory}
+                --executor-cores ${sparkExecutorCores}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
+                --conf spark.sql.shuffle.partitions=7680
+            </spark-opts>
+            <arg>--dbName</arg><arg>${outputGraph}</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
+        </spark>
+        <ok to="fork_merge_claims"/>
+        <error to="Kill"/>
+    </action>
 
     <fork name="fork_merge_claims">
         <path start="merge_claims_publication"/>
@@ -359,7 +406,6 @@
         <path start="merge_claims_relation"/>
     </fork>
 
-
     <action name="merge_claims_publication">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>
@@ -375,12 +421,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Publication</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -401,12 +450,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=7680
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Dataset</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -427,12 +479,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=3840
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Relation</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -453,12 +508,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=1920
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Software</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -479,12 +537,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=1920
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.OtherResearchProduct</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -505,12 +566,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=200
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Datasource</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -531,12 +595,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=200
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Organization</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>
@@ -557,12 +624,15 @@
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.warehouse.dir=${sparkSqlWarehouseDir}
                 --conf spark.sql.shuffle.partitions=200
             </spark-opts>
             <arg>--rawGraphPath</arg><arg>${workingDir}/graph_raw</arg>
             <arg>--claimsGraphPath</arg><arg>${workingDir}/graph_claims</arg>
-            <arg>--outputRawGaphPath</arg><arg>${graphOutputPath}</arg>
+            <arg>--outputGraph</arg><arg>${outputGraph}</arg>
+            <arg>--graphFormat</arg><arg>${graphFormat}</arg>
             <arg>--graphTableClassName</arg><arg>eu.dnetlib.dhp.schema.oaf.Project</arg>
+            <arg>--hiveMetastoreUris</arg><arg>${hiveMetastoreUris}</arg>
         </spark>
         <ok to="wait_merge"/>
         <error to="Kill"/>

dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/clean/CleaningFunctionTest.java

@@ -7,8 +7,6 @@ import static org.mockito.Mockito.lenient;
 import java.io.IOException;
 import java.util.List;
 import java.util.Set;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import org.apache.commons.io.IOUtils;
@@ -20,8 +18,12 @@ import org.mockito.junit.jupiter.MockitoExtension;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
-import eu.dnetlib.dhp.schema.oaf.*;
+import eu.dnetlib.dhp.common.CleaningRuleMap;
+import eu.dnetlib.dhp.common.OafCleaner;
+import eu.dnetlib.dhp.common.VocabularyGroup;
+import eu.dnetlib.dhp.schema.oaf.Publication;
+import eu.dnetlib.dhp.schema.oaf.Qualifier;
+import eu.dnetlib.dhp.schema.oaf.Result;
 import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;
 import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpService;
 
@@ -62,12 +64,10 @@ public class CleaningFunctionTest {
 		assertTrue(p_in instanceof Result);
 		assertTrue(p_in instanceof Publication);
 
-		Publication p_out = OafCleaner.apply(CleanGraphSparkJob.fixVocabularyNames(p_in), mapping);
+		Publication p_out = OafCleaner.apply(p_in, mapping);
 
 		assertNotNull(p_out);
 
-		assertNotNull(p_out.getPublisher());
-		assertNull(p_out.getPublisher().getValue());
 		assertEquals("und", p_out.getLanguage().getClassid());
 		assertEquals("Undetermined", p_out.getLanguage().getClassname());
 
@@ -90,16 +90,6 @@ public class CleaningFunctionTest {
 
 		Publication p_defaults = CleanGraphSparkJob.fixDefaults(p_out);
 		assertEquals("CLOSED", p_defaults.getBestaccessright().getClassid());
-		assertNull(p_out.getPublisher());
-
-		getAuthorPids(p_defaults).forEach(pid -> {
-			System.out
-				.println(
-					String
-						.format(
-							"%s [%s - %s]", pid.getValue(), pid.getQualifier().getClassid(),
-							pid.getQualifier().getClassname()));
-		});
 
 		// TODO add more assertions to verity the cleaned values
 		System.out.println(MAPPER.writeValueAsString(p_out));
@@ -109,7 +99,7 @@ public class CleaningFunctionTest {
 		 */
 	}
 
-	private Stream<Qualifier> getAuthorPidTypes(Result pub) {
+	private Stream<Qualifier> getAuthorPidTypes(Publication pub) {
 		return pub
 			.getAuthor()
 			.stream()
@@ -118,14 +108,6 @@ public class CleaningFunctionTest {
 			.map(s -> s.getQualifier());
 	}
 
-	private Stream<StructuredProperty> getAuthorPids(Result pub) {
-		return pub
-			.getAuthor()
-			.stream()
-			.map(a -> a.getPid())
-			.flatMap(p -> p.stream());
-	}
-
 	private List<String> vocs() throws IOException {
 		return IOUtils
 			.readLines(CleaningFunctionTest.class.getResourceAsStream("/eu/dnetlib/dhp/oa/graph/clean/terms.txt"));

dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java

@@ -21,8 +21,8 @@ import org.mockito.junit.jupiter.MockitoExtension;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.oa.graph.clean.CleaningFunctionTest;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.Author;
 import eu.dnetlib.dhp.schema.oaf.Dataset;

dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MigrateDbEntitiesApplicationTest.java

@@ -27,8 +27,8 @@ import org.mockito.junit.jupiter.MockitoExtension;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
-import eu.dnetlib.dhp.oa.graph.raw.common.OafMapperUtils;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
+import eu.dnetlib.dhp.common.OafMapperUtils;
+import eu.dnetlib.dhp.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.oaf.Datasource;
 import eu.dnetlib.dhp.schema.oaf.Oaf;
 import eu.dnetlib.dhp.schema.oaf.Organization;

dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/PrepareRelationsJobTest.java

@@ -4,6 +4,7 @@ package eu.dnetlib.dhp.oa.provision;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.List;
 
 import org.apache.commons.io.FileUtils;
 import org.apache.spark.SparkConf;
@@ -20,8 +21,6 @@ import org.junit.jupiter.api.io.TempDir;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import eu.dnetlib.dhp.oa.provision.model.ProvisionModelSupport;
 import eu.dnetlib.dhp.schema.oaf.Relation;
 
@@ -31,7 +30,8 @@ public class PrepareRelationsJobTest {
 
 	public static final String SUBRELTYPE = "subRelType";
 	public static final String OUTCOME = "outcome";
-	public static final String SUPPLEMENT = "supplement";
+	public static final String PARTICIPATION = "participation";
+	public static final String AFFILIATION = "affiliation";
 
 	private static SparkSession spark;
 
@@ -64,7 +64,7 @@ public class PrepareRelationsJobTest {
 	@Test
 	public void testRunPrepareRelationsJob(@TempDir Path testPath) throws Exception {
 
-		final int maxRelations = 10;
+		final int maxRelations = 20;
 		PrepareRelationsJob
 			.main(
 				new String[] {
@@ -73,7 +73,8 @@ public class PrepareRelationsJobTest {
 					"-outputPath", testPath.toString(),
 					"-relPartitions", "10",
 					"-relationFilter", "asd",
-					"-maxRelations", String.valueOf(maxRelations)
+					"-sourceMaxRelations", String.valueOf(maxRelations),
+					"-targetMaxRelations", String.valueOf(maxRelations * 100)
 				});
 
 		Dataset<Relation> out = spark
@@ -82,19 +83,31 @@ public class PrepareRelationsJobTest {
 			.as(Encoders.bean(Relation.class))
 			.cache();
 
-		Assertions.assertEquals(10, out.count());
+		Assertions.assertEquals(maxRelations, out.count());
 
 		Dataset<Row> freq = out
 			.toDF()
 			.cube(SUBRELTYPE)
 			.count()
 			.filter((FilterFunction<Row>) value -> !value.isNullAt(0));
-		long outcome = freq.filter(freq.col(SUBRELTYPE).equalTo(OUTCOME)).collectAsList().get(0).getAs("count");
-		long supplement = freq.filter(freq.col(SUBRELTYPE).equalTo(SUPPLEMENT)).collectAsList().get(0).getAs("count");
 
-		Assertions.assertTrue(outcome > supplement);
+		log.info(freq.collectAsList().toString());
+
+		long outcome = getRows(freq, OUTCOME).get(0).getAs("count");
+		long participation = getRows(freq, PARTICIPATION).get(0).getAs("count");
+		long affiliation = getRows(freq, AFFILIATION).get(0).getAs("count");
+
+		Assertions.assertTrue(participation == outcome);
+		Assertions.assertTrue(outcome > affiliation);
+		Assertions.assertTrue(participation > affiliation);
+
 		Assertions.assertEquals(7, outcome);
-		Assertions.assertEquals(3, supplement);
+		Assertions.assertEquals(7, participation);
+		Assertions.assertEquals(6, affiliation);
+	}
+
+	protected List<Row> getRows(Dataset<Row> freq, String col) {
+		return freq.filter(freq.col(SUBRELTYPE).equalTo(col)).collectAsList();
 	}
 
 }

dhp-workflows/dhp-workflows-common/pom.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>dhp-workflows</artifactId>
+        <groupId>eu.dnetlib.dhp</groupId>
+        <version>1.2.4-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>dhp-workflows-common</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.spark</groupId>
+            <artifactId>spark-core_2.11</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.spark</groupId>
+            <artifactId>spark-sql_2.11</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>eu.dnetlib.dhp</groupId>
+            <artifactId>dhp-common</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>eu.dnetlib.dhp</groupId>
+            <artifactId>dhp-schemas</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+    </dependencies>
+</project>

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/CleaningRuleMap.java

@@ -1,5 +1,5 @@
 
-package eu.dnetlib.dhp.oa.graph.clean;
+package eu.dnetlib.dhp.common;
 
 import java.io.Serializable;
 import java.util.HashMap;
@@ -7,7 +7,6 @@ import java.util.HashMap;
 import org.apache.commons.lang3.StringUtils;
 
 import eu.dnetlib.dhp.common.FunctionalInterfaceSupport.SerializableConsumer;
-import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.Country;
 import eu.dnetlib.dhp.schema.oaf.Qualifier;

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/GraphFormat.java

@@ -0,0 +1,10 @@
+
+package eu.dnetlib.dhp.common;
+
+public enum GraphFormat {
+
+	JSON, HIVE;
+
+	public static GraphFormat DEFAULT = JSON;
+
+}

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/GraphSupport.java

@@ -0,0 +1,99 @@
+
+package eu.dnetlib.dhp.common;
+
+import java.util.Objects;
+
+import org.apache.spark.api.java.function.FilterFunction;
+import org.apache.spark.api.java.function.MapFunction;
+import org.apache.spark.sql.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import eu.dnetlib.dhp.schema.common.ModelSupport;
+import eu.dnetlib.dhp.schema.oaf.Oaf;
+
+public class GraphSupport {
+
+	private static final Logger log = LoggerFactory.getLogger(GraphSupport.class);
+
+	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+
+	public static <T extends Oaf> void deleteGraphTable(SparkSession spark, Class<T> clazz, String outputGraph,
+		GraphFormat graphFormat) {
+		switch (graphFormat) {
+
+			case JSON:
+				String outPath = outputGraph + "/" + clazz.getSimpleName().toLowerCase();
+				removeOutputDir(spark, outPath);
+				break;
+			case HIVE:
+				String table = ModelSupport.tableIdentifier(outputGraph, clazz);
+				String sql = String.format("DROP TABLE IF EXISTS %s PURGE", table);
+				log.info("running SQL: '{}'", sql);
+				spark.sql(sql);
+				break;
+		}
+	}
+
+	public static <T extends Oaf> void saveGraphTable(Dataset<T> dataset, Class<T> clazz, String outputGraph,
+		GraphFormat graphFormat) {
+
+		final DataFrameWriter<T> writer = dataset.write().mode(SaveMode.Overwrite);
+		switch (graphFormat) {
+			case JSON:
+				String type = clazz.getSimpleName().toLowerCase();
+				String outPath = outputGraph + "/" + type;
+
+				log.info("saving graph to path {},", outPath);
+
+				writer.option("compression", "gzip").json(outPath);
+				break;
+			case HIVE:
+				final String db_table = ModelSupport.tableIdentifier(outputGraph, clazz);
+
+				log.info("saving graph to '{}'", db_table);
+
+				writer.saveAsTable(db_table);
+				break;
+		}
+	}
+
+	public static <T extends Oaf> Dataset<T> readGraph(
+		SparkSession spark, String graph, Class<T> clazz, GraphFormat format) {
+
+		log.info("reading graph {}, format {}, class {}", graph, format, clazz);
+
+		Encoder<T> encoder = Encoders.bean(clazz);
+
+		switch (format) {
+			case JSON:
+				String path = graph + "/" + clazz.getSimpleName().toLowerCase();
+				log.info("reading path {}", path);
+				return spark
+					.read()
+					.textFile(path)
+					.map(
+						(MapFunction<String, T>) value -> OBJECT_MAPPER.readValue(value, clazz),
+						encoder)
+					.filter((FilterFunction<T>) value -> Objects.nonNull(ModelSupport.idFn().apply(value)));
+			case HIVE:
+				String table = ModelSupport.tableIdentifier(graph, clazz);
+				log.info("reading table {}", table);
+
+				return spark.table(table).as(encoder);
+			default:
+				throw new IllegalStateException(String.format("format not managed: '%s'", format));
+		}
+	}
+
+	public static <T extends Oaf> Dataset<T> readGraphJSON(SparkSession spark, String graph, Class<T> clazz) {
+		return readGraph(spark, graph, clazz, GraphFormat.JSON);
+	}
+
+	private static void removeOutputDir(SparkSession spark, String path) {
+		HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
+	}
+
+}

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/OafCleaner.java

@@ -1,5 +1,5 @@
 
-package eu.dnetlib.dhp.oa.graph.clean;
+package eu.dnetlib.dhp.common;
 
 import java.io.Serializable;
 import java.lang.reflect.Field;

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/OafMapperUtils.java

@@ -1,11 +1,7 @@
 
-package eu.dnetlib.dhp.oa.graph.raw.common;
+package eu.dnetlib.dhp.common;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Function;
 import java.util.function.Predicate;
@@ -13,15 +9,7 @@ import java.util.stream.Collectors;
 
 import org.apache.commons.lang3.StringUtils;
 
-import eu.dnetlib.dhp.schema.oaf.DataInfo;
-import eu.dnetlib.dhp.schema.oaf.ExtraInfo;
-import eu.dnetlib.dhp.schema.oaf.Field;
-import eu.dnetlib.dhp.schema.oaf.Journal;
-import eu.dnetlib.dhp.schema.oaf.KeyValue;
-import eu.dnetlib.dhp.schema.oaf.OAIProvenance;
-import eu.dnetlib.dhp.schema.oaf.OriginDescription;
-import eu.dnetlib.dhp.schema.oaf.Qualifier;
-import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
+import eu.dnetlib.dhp.schema.oaf.*;
 import eu.dnetlib.dhp.utils.DHPUtils;
 
 public class OafMapperUtils {

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/ResetHiveDbApplication.java

@@ -0,0 +1,60 @@
+
+package eu.dnetlib.dhp.common;
+
+import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkHiveSession;
+
+import java.util.Optional;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.spark.SparkConf;
+import org.apache.spark.sql.SparkSession;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+
+public class ResetHiveDbApplication {
+
+	private static final Logger log = LoggerFactory.getLogger(ResetHiveDbApplication.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+			IOUtils
+				.toString(
+					ResetHiveDbApplication.class
+						.getResourceAsStream(
+							"/eu/dnetlib/dhp/common/reset_hive_db_parameters.json")));
+		parser.parseArgument(args);
+
+		Boolean isSparkSessionManaged = Optional
+			.ofNullable(parser.get("isSparkSessionManaged"))
+			.map(Boolean::valueOf)
+			.orElse(Boolean.TRUE);
+		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
+
+		final String dbName = Optional
+			.ofNullable(parser.get("dbName"))
+			.orElseThrow(() -> new IllegalArgumentException("missing DB name"));
+		log.info("dbName: {}", dbName);
+
+		String hiveMetastoreUris = parser.get("hiveMetastoreUris");
+		log.info("hiveMetastoreUris: {}", hiveMetastoreUris);
+
+		SparkConf conf = new SparkConf();
+		conf.set("hive.metastore.uris", hiveMetastoreUris);
+
+		runWithSparkHiveSession(
+			conf,
+			isSparkSessionManaged,
+			spark -> {
+				runSQL(spark, String.format("DROP DATABASE IF EXISTS %s CASCADE", dbName));
+				runSQL(spark, String.format("CREATE DATABASE %s", dbName));
+			});
+	}
+
+	protected static void runSQL(SparkSession spark, String sql) {
+		log.info("running SQL '{}'", sql);
+		spark.sqlContext().sql(sql);
+	}
+
+}

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/Vocabulary.java

@@ -1,5 +1,5 @@
 
-package eu.dnetlib.dhp.oa.graph.raw.common;
+package eu.dnetlib.dhp.common;
 
 import java.io.Serializable;
 import java.util.HashMap;

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/VocabularyGroup.java

@@ -1,5 +1,5 @@
 
-package eu.dnetlib.dhp.oa.graph.raw.common;
+package eu.dnetlib.dhp.common;
 
 import java.io.Serializable;
 import java.util.*;

dhp-workflows/dhp-workflows-common/src/main/java/eu/dnetlib/dhp/common/VocabularyTerm.java

@@ -1,5 +1,5 @@
 
-package eu.dnetlib.dhp.oa.graph.raw.common;
+package eu.dnetlib.dhp.common;
 
 import java.io.Serializable;
 

dhp-workflows/dhp-workflows-common/src/main/resources/eu/dnetlib/dhp/common/reset_hive_db_parameters.json

@@ -0,0 +1,20 @@
+[
+  {
+    "paramName": "issm",
+    "paramLongName": "isSparkSessionManaged",
+    "paramDescription": "when true will stop SparkSession after job execution",
+    "paramRequired": false
+  },
+  {
+    "paramName": "hmu",
+    "paramLongName": "hiveMetastoreUris",
+    "paramDescription": "the hive metastore uris",
+    "paramRequired": true
+  },
+  {
+    "paramName": "db",
+    "paramLongName": "dbName",
+    "paramDescription": "the graph db name",
+    "paramRequired": true
+  }
+]

dhp-workflows/pom.xml

@@ -17,6 +17,7 @@
 
     <modules>
         <module>dhp-workflow-profiles</module>
+        <module>dhp-workflows-common</module>
         <module>dhp-aggregation</module>
         <module>dhp-distcp</module>
         <module>dhp-actionmanager</module>
@@ -269,7 +270,7 @@
                                         oozie.wf.application.path,projectVersion,oozie.use.system.libpath,
                                         oozieActionShareLibForSpark1,spark1YarnHistoryServerAddress,spark1EventLogDir,
                                         oozieActionShareLibForSpark2,spark2YarnHistoryServerAddress,spark2EventLogDir,
-                                        sparkSqlWarehouseDir
+                                        sparkSqlWarehouseDir,hiveMetastoreUris
                                     </include>
                                     <includeSystemProperties>true</includeSystemProperties>
                                     <includePropertyKeysFromFiles>