forked from D-Net/dnet-hadoop
32 lines
844 B
Java
32 lines
844 B
Java
|
|
||
|
package eu.dnetlib.dhp.broker.oa.util;
|
||
|
|
||
|
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.SparkSession;
|
||
|
|
||
|
import com.fasterxml.jackson.databind.ObjectMapper;
|
||
|
|
||
|
import eu.dnetlib.dhp.common.HdfsSupport;
|
||
|
|
||
|
public class ClusterUtils {
|
||
|
|
||
|
private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
|
||
|
|
||
|
public static void removeDir(final SparkSession spark, final String path) {
|
||
|
HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
|
||
|
}
|
||
|
|
||
|
public static <R> Dataset<R> readPath(
|
||
|
final SparkSession spark,
|
||
|
final String inputPath,
|
||
|
final Class<R> clazz) {
|
||
|
return spark
|
||
|
.read()
|
||
|
.textFile(inputPath)
|
||
|
.map((MapFunction<String, R>) value -> OBJECT_MAPPER.readValue(value, clazz), Encoders.bean(clazz));
|
||
|
}
|
||
|
|
||
|
}
|