diff --git a/dhp-workflows/dhp-graph-provision/src/main/java/eu/dnetlib/dhp/oa/provision/GraphJoiner_v2.java b/dhp-workflows/dhp-graph-provision/src/main/java/eu/dnetlib/dhp/oa/provision/GraphJoiner_v2.java
index 5eac12e5d..3ee72c318 100644
--- a/dhp-workflows/dhp-graph-provision/src/main/java/eu/dnetlib/dhp/oa/provision/GraphJoiner_v2.java
+++ b/dhp-workflows/dhp-graph-provision/src/main/java/eu/dnetlib/dhp/oa/provision/GraphJoiner_v2.java
@@ -23,6 +23,8 @@ import java.io.IOException;
 import java.io.Serializable;
 import java.util.*;
 
+import static org.apache.spark.sql.functions.*;
+
 import static eu.dnetlib.dhp.oa.provision.utils.GraphMappingUtils.asRelatedEntity;
 
 /**
@@ -93,9 +95,10 @@ public class GraphJoiner_v2 implements Serializable {
                 .union(otherresearchproduct)
                 .union(software)
                 .union(publication)
-        .repartition(20000)
-        .write()
-        .parquet(getOutPath() + "/entities");
+                .repartition(7000)
+                .write()
+                .partitionBy("id")
+                .parquet(getOutPath() + "/entities");
 
         Dataset<Tuple2<String, TypedRow>> entities = getSpark()
                 .read()
@@ -108,29 +111,51 @@ public class GraphJoiner_v2 implements Serializable {
                     t.setOaf(r.getAs("oaf"));
 
                     return new Tuple2<>(t.getId(), t);
-                }, Encoders.tuple(Encoders.STRING(), Encoders.kryo(TypedRow.class)));
+                }, Encoders.tuple(Encoders.STRING(), Encoders.kryo(TypedRow.class)))
+                .cache();
 
         System.out.println("Entities, number of partitions: " + entities.rdd().getNumPartitions());
         System.out.println("Entities schema:");
         entities.printSchema();
+        System.out.println("Entities count:" + entities.count());
 
-/*
         // reads the relationships
-        Dataset<Relation> rels = readPathRelation(jsc, getInputPath())
+        readPathRelation(jsc, getInputPath())
                 .groupByKey((MapFunction<Relation, SortableRelationKey>) t -> SortableRelationKey.from(t), Encoders.kryo(SortableRelationKey.class))
-                .flatMapGroups((FlatMapGroupsFunction<SortableRelationKey, Relation, Relation>) (key, values) -> Iterators.limit(values, MAX_RELS), Encoders.bean(Relation.class))
+                .flatMapGroups((FlatMapGroupsFunction<SortableRelationKey, Relation, Relation>) (key, values) -> Iterators.limit(values, MAX_RELS), Encoders.kryo(Relation.class))
+                .repartition(3000)
+                .write()
+                .partitionBy("source", "target")
+                .parquet(getOutPath() + "/relations");
+
+        Dataset<Relation> rels = getSpark()
+                .read()
+                .load(getOutPath() + "/relations")
+                .map((MapFunction<Row, Relation>) r -> {
+                    Relation rel = new Relation();
+                    rel.setSource(r.getAs("source"));
+                    rel.setTarget(r.getAs("target"));
+                    rel.setRelType(r.getAs("relType"));
+                    rel.setSubRelType(r.getAs("subRelType"));
+                    rel.setRelClass(r.getAs("relClass"));
+                    rel.setDataInfo(r.getAs("dataInfo"));
+                    rel.setCollectedFrom(r.getList(r.fieldIndex("collectedFrom")));
+                    return rel;
+                }, Encoders.kryo(Relation.class))
                 .cache();
 
         System.out.println("Relation schema:");
-        rels.printSchema();
+        System.out.println("Relation, number of partitions: " + rels.rdd().getNumPartitions());
+        System.out.println("Relation schema:");
+        entities.printSchema();
+        System.out.println("Relation count:" + rels.count());
 
+                /*
         Dataset<Tuple2<String, Relation>> relsByTarget = rels
                 .map((MapFunction<Relation, Tuple2<String, Relation>>) r -> new Tuple2<>(r.getTarget(), r), Encoders.tuple(Encoders.STRING(), Encoders.kryo(Relation.class)));
 
-        System.out.println("Relation by target schema:");
-        relsByTarget.printSchema();
 
-        Dataset<Tuple2<String, EntityRelEntity>> bySource = relsByTarget
+        relsByTarget
                 .joinWith(entities, relsByTarget.col("_1").equalTo(entities.col("_1")), "inner")
                 .filter((FilterFunction<Tuple2<Tuple2<String, Relation>, Tuple2<String, TypedRow>>>) value -> value._2()._2().getDeleted() == false)
                 .map((MapFunction<Tuple2<Tuple2<String, Relation>, Tuple2<String, TypedRow>>, EntityRelEntity>) t -> {
@@ -139,12 +164,28 @@ public class GraphJoiner_v2 implements Serializable {
                     e.setTarget(asRelatedEntity(t._2()._2()));
                     return e;
                 }, Encoders.kryo(EntityRelEntity.class))
-                .map((MapFunction<EntityRelEntity, Tuple2<String, EntityRelEntity>>) e -> new Tuple2<>(e.getRelation().getSource(), e),
-                        Encoders.tuple(Encoders.STRING(), Encoders.kryo(EntityRelEntity.class)));
+                .repartition(20000)
+                .write()
+                .parquet(getOutPath() + "/bySource");
 
-        System.out.println("bySource schema");
+        Dataset<Tuple2<String, EntityRelEntity>> bySource = getSpark()
+                .read()
+                .load(getOutPath() + "/bySource")
+                .map(new MapFunction<Row, EntityRelEntity>() {
+                    @Override
+                    public EntityRelEntity call(Row value) throws Exception {
+                        return null;
+                    }
+                }, Encoders.kryo(EntityRelEntity.class))
+                .map((MapFunction<EntityRelEntity, Tuple2<String, EntityRelEntity>>) e -> new Tuple2<>(e.getRelation().getSource(), e),
+                        Encoders.tuple(Encoders.STRING(), Encoders.kryo(EntityRelEntity.class)))
+
+                System.out.println("bySource schema");
         bySource.printSchema();
 
+
+
+
         Dataset<EntityRelEntity> joined = entities
                 .joinWith(bySource, entities.col("_1").equalTo(bySource.col("_1")), "left")
                 .map((MapFunction<Tuple2<Tuple2<String, TypedRow>, Tuple2<String, EntityRelEntity>>, EntityRelEntity>) value -> {
diff --git a/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/config-default.xml b/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/config-default.xml
index b1a494ac4..c070d8338 100644
--- a/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/config-default.xml
+++ b/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/config-default.xml
@@ -27,4 +27,16 @@
         <name>spark2EventLogDir</name>
         <value>/user/spark/spark2ApplicationHistory</value>
     </property>
+    <property>
+        <name>spark2ExtraListeners</name>
+        <value>"com.cloudera.spark.lineage.NavigatorAppListener"</value>
+    </property>
+    <property>
+        <name>spark2SqlQueryExecutionListeners</name>
+        <value>"com.cloudera.spark.lineage.NavigatorQueryListener"</value>
+    </property>
+    <property>
+        <name>oozieActionShareLibForSpark2</name>
+        <value>spark2</value>
+    </property>
 </configuration>
\ No newline at end of file
diff --git a/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/workflow.xml b/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/workflow.xml
index f4bd3f19e..194cd43c8 100644
--- a/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-graph-provision/src/main/resources/eu/dnetlib/dhp/oa/provision/oozie_app/workflow.xml
@@ -25,6 +25,20 @@
             <name>sparkExecutorCoresForIndexing</name>
             <description>number of cores used by single executor</description>
         </property>
+        <property>
+            <name>oozieActionShareLibForSpark2</name>
+            <description>oozie action sharelib for spark 2.*</description>
+        </property>
+        <property>
+            <name>spark2ExtraListeners</name>
+            <value>com.cloudera.spark.lineage.NavigatorAppListener</value>
+            <description>spark 2.* extra listeners classname</description>
+        </property>
+        <property>
+            <name>spark2SqlQueryExecutionListeners</name>
+            <value>com.cloudera.spark.lineage.NavigatorQueryListener</value>
+            <description>spark 2.* sql query execution listeners classname</description>
+        </property>
         <property>
             <name>spark2YarnHistoryServerAddress</name>
             <description>spark 2.* yarn history server address</description>
@@ -40,12 +54,8 @@
         <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>${oozieLauncherQueueName}</value>
+                <name>oozie.action.sharelib.for.spark</name>
+                <value>${oozieActionShareLibForSpark2}</value>
             </property>
         </configuration>
     </global>
@@ -76,11 +86,11 @@
             <class>eu.dnetlib.dhp.oa.provision.SparkXmlRecordBuilderJob_v2</class>
             <jar>dhp-graph-provision-${projectVersion}.jar</jar>
             <spark-opts>
-                --executor-cores ${sparkExecutorCoresForJoining}
-                --executor-memory ${sparkExecutorMemoryForJoining}
+                --executor-cores=${sparkExecutorCoresForJoining}
+                --executor-memory=${sparkExecutorMemoryForJoining}
                 --driver-memory=${sparkDriverMemoryForJoining}
-                --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener"
-                --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener"
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
             </spark-opts>
@@ -107,8 +117,8 @@
                 --executor-memory ${sparkExecutorMemoryForIndexing}
                 --driver-memory=${sparkDriverMemoryForIndexing}
                 --conf spark.dynamicAllocation.maxExecutors=${sparkExecutorCoresForIndexing}
-                --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener"
-                --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener"
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
                 --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
             </spark-opts>