diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/MakeTar.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/MakeTar.java
index 5366b1f15..7d8013c53 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/MakeTar.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/MakeTar.java
@@ -2,7 +2,9 @@
 package eu.dnetlib.dhp.oa.graph.dump;
 
 import java.io.*;
+import java.util.Optional;
 
+import eu.dnetlib.dhp.common.MakeTarArchive;
 import org.apache.commons.compress.archivers.ar.ArArchiveEntry;
 import org.apache.commons.compress.archivers.ar.ArArchiveOutputStream;
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
@@ -39,16 +41,20 @@ public class MakeTar implements Serializable {
 		final String inputPath = parser.get("sourcePath");
 		log.info("input path : {}", inputPath);
 
+		final int gBperSplit = Optional.ofNullable(parser.get("splitSize"))
+				.map(Integer::valueOf)
+				.orElse(10);
+
 		Configuration conf = new Configuration();
 		conf.set("fs.defaultFS", hdfsNameNode);
 
 		FileSystem fileSystem = FileSystem.get(conf);
 
-		makeTArArchive(fileSystem, inputPath, outputPath);
+		makeTArArchive(fileSystem, inputPath, outputPath, gBperSplit);
 
 	}
 
-	public static void makeTArArchive(FileSystem fileSystem, String inputPath, String outputPath) throws IOException {
+	public static void makeTArArchive(FileSystem fileSystem, String inputPath, String outputPath, int gBperSplit) throws IOException {
 
 		RemoteIterator<LocatedFileStatus> dir_iterator = fileSystem.listLocatedStatus(new Path(inputPath));
 
@@ -59,132 +65,132 @@ public class MakeTar implements Serializable {
 			String p_string = p.toString();
 			String entity = p_string.substring(p_string.lastIndexOf("/") + 1);
 
-			writeMaxSize(fileSystem, p_string, outputPath + "/" + entity, entity, 10);
+			MakeTarArchive.tarMaxSize(fileSystem, p_string, outputPath + "/" + entity, entity, gBperSplit);
 		}
 
 	}
 
-	private static TarArchiveOutputStream getTar(FileSystem fileSystem, String outputPath) throws IOException {
-		Path hdfsWritePath = new Path(outputPath);
-		FSDataOutputStream fsDataOutputStream = null;
-		if (fileSystem.exists(hdfsWritePath)) {
-			fileSystem.delete(hdfsWritePath, true);
-
-		}
-		fsDataOutputStream = fileSystem.create(hdfsWritePath);
-
-		return new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream());
-	}
-
-	private static void writeMaxSize(FileSystem fileSystem, String inputPath, String outputPath, String dir_name,
-		int gBperSplit) throws IOException {
-		final long bytesPerSplit = 1024L * 1024L * 1024L * gBperSplit;
-
-		long sourceSize = fileSystem.getContentSummary(new Path(inputPath)).getSpaceConsumed();
-
-		final long numberOfSplits = sourceSize / bytesPerSplit;
-
-		if (numberOfSplits < 2) {
-			write(fileSystem, inputPath, outputPath + ".tar", dir_name);
-		} else {
-			int partNum = 0;
-
-			RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
-				.listFiles(
-					new Path(inputPath), true);
-			boolean next = fileStatusListIterator.hasNext();
-			while (sourceSize > 0 && next) {
-				TarArchiveOutputStream ar = getTar(fileSystem, outputPath + "_" + (partNum + 1) + ".tar");
-
-				long current_size = 0;
-				while (next && current_size < bytesPerSplit) {
-					LocatedFileStatus fileStatus = fileStatusListIterator.next();
-
-					Path p = fileStatus.getPath();
-					String p_string = p.toString();
-					if (!p_string.endsWith("_SUCCESS")) {
-						String name = p_string.substring(p_string.lastIndexOf("/") + 1);
-						if (name.trim().equalsIgnoreCase("communities_infrastructures")) {
-							name = "communities_infrastructures.json";
-						}
-						TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name);
-						entry.setSize(fileStatus.getLen());
-						current_size += fileStatus.getLen();
-						ar.putArchiveEntry(entry);
-
-						InputStream is = fileSystem.open(fileStatus.getPath());
-
-						BufferedInputStream bis = new BufferedInputStream(is);
-
-						int count;
-						byte data[] = new byte[1024];
-						while ((count = bis.read(data, 0, data.length)) != -1) {
-							ar.write(data, 0, count);
-						}
-						bis.close();
-						ar.closeArchiveEntry();
-
-					}
-					next = fileStatusListIterator.hasNext();
-
-				}
-				sourceSize = sourceSize - current_size;
-				partNum += 1;
-				ar.close();
-			}
-
-		}
-
-	}
-
-	private static void write(FileSystem fileSystem, String inputPath, String outputPath, String dir_name)
-		throws IOException {
-
-		Path hdfsWritePath = new Path(outputPath);
-		FSDataOutputStream fsDataOutputStream = null;
-		if (fileSystem.exists(hdfsWritePath)) {
-			fileSystem.delete(hdfsWritePath, true);
-
-		}
-		fsDataOutputStream = fileSystem.create(hdfsWritePath);
-
-		TarArchiveOutputStream ar = new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream());
-
-		RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
-			.listFiles(
-				new Path(inputPath), true);
-
-		while (fileStatusListIterator.hasNext()) {
-			LocatedFileStatus fileStatus = fileStatusListIterator.next();
-
-			Path p = fileStatus.getPath();
-			String p_string = p.toString();
-			if (!p_string.endsWith("_SUCCESS")) {
-				String name = p_string.substring(p_string.lastIndexOf("/") + 1);
-				if (name.trim().equalsIgnoreCase("communities_infrastructures")) {
-					name = "communities_infrastructures.json";
-				}
-				TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name);
-				entry.setSize(fileStatus.getLen());
-				ar.putArchiveEntry(entry);
-
-				InputStream is = fileSystem.open(fileStatus.getPath());
-
-				BufferedInputStream bis = new BufferedInputStream(is);
-
-				int count;
-				byte data[] = new byte[1024];
-				while ((count = bis.read(data, 0, data.length)) != -1) {
-					ar.write(data, 0, count);
-				}
-				bis.close();
-				ar.closeArchiveEntry();
-
-			}
-
-		}
-
-		ar.close();
-	}
+//	private static TarArchiveOutputStream getTar(FileSystem fileSystem, String outputPath) throws IOException {
+//		Path hdfsWritePath = new Path(outputPath);
+//		FSDataOutputStream fsDataOutputStream = null;
+//		if (fileSystem.exists(hdfsWritePath)) {
+//			fileSystem.delete(hdfsWritePath, true);
+//
+//		}
+//		fsDataOutputStream = fileSystem.create(hdfsWritePath);
+//
+//		return new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream());
+//	}
+//
+//	private static void writeMaxSize(FileSystem fileSystem, String inputPath, String outputPath, String dir_name,
+//		int gBperSplit) throws IOException {
+//		final long bytesPerSplit = 1024L * 1024L * 1024L * gBperSplit;
+//
+//		long sourceSize = fileSystem.getContentSummary(new Path(inputPath)).getSpaceConsumed();
+//
+//		final long numberOfSplits = sourceSize / bytesPerSplit;
+//
+//		if (numberOfSplits < 2) {
+//			write(fileSystem, inputPath, outputPath + ".tar", dir_name);
+//		} else {
+//			int partNum = 0;
+//
+//			RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
+//				.listFiles(
+//					new Path(inputPath), true);
+//			boolean next = fileStatusListIterator.hasNext();
+//			while (sourceSize > 0 && next) {
+//				TarArchiveOutputStream ar = getTar(fileSystem, outputPath + "_" + (partNum + 1) + ".tar");
+//
+//				long current_size = 0;
+//				while (next && current_size < bytesPerSplit) {
+//					LocatedFileStatus fileStatus = fileStatusListIterator.next();
+//
+//					Path p = fileStatus.getPath();
+//					String p_string = p.toString();
+//					if (!p_string.endsWith("_SUCCESS")) {
+//						String name = p_string.substring(p_string.lastIndexOf("/") + 1);
+//						if (name.trim().equalsIgnoreCase("communities_infrastructures")) {
+//							name = "communities_infrastructures.json";
+//						}
+//						TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name);
+//						entry.setSize(fileStatus.getLen());
+//						current_size += fileStatus.getLen();
+//						ar.putArchiveEntry(entry);
+//
+//						InputStream is = fileSystem.open(fileStatus.getPath());
+//
+//						BufferedInputStream bis = new BufferedInputStream(is);
+//
+//						int count;
+//						byte data[] = new byte[1024];
+//						while ((count = bis.read(data, 0, data.length)) != -1) {
+//							ar.write(data, 0, count);
+//						}
+//						bis.close();
+//						ar.closeArchiveEntry();
+//
+//					}
+//					next = fileStatusListIterator.hasNext();
+//
+//				}
+//				sourceSize = sourceSize - current_size;
+//				partNum += 1;
+//				ar.close();
+//			}
+//
+//		}
+//
+//	}
+//
+//	private static void write(FileSystem fileSystem, String inputPath, String outputPath, String dir_name)
+//		throws IOException {
+//
+//		Path hdfsWritePath = new Path(outputPath);
+//		FSDataOutputStream fsDataOutputStream = null;
+//		if (fileSystem.exists(hdfsWritePath)) {
+//			fileSystem.delete(hdfsWritePath, true);
+//
+//		}
+//		fsDataOutputStream = fileSystem.create(hdfsWritePath);
+//
+//		TarArchiveOutputStream ar = new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream());
+//
+//		RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
+//			.listFiles(
+//				new Path(inputPath), true);
+//
+//		while (fileStatusListIterator.hasNext()) {
+//			LocatedFileStatus fileStatus = fileStatusListIterator.next();
+//
+//			Path p = fileStatus.getPath();
+//			String p_string = p.toString();
+//			if (!p_string.endsWith("_SUCCESS")) {
+//				String name = p_string.substring(p_string.lastIndexOf("/") + 1);
+//				if (name.trim().equalsIgnoreCase("communities_infrastructures")) {
+//					name = "communities_infrastructures.json";
+//				}
+//				TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name);
+//				entry.setSize(fileStatus.getLen());
+//				ar.putArchiveEntry(entry);
+//
+//				InputStream is = fileSystem.open(fileStatus.getPath());
+//
+//				BufferedInputStream bis = new BufferedInputStream(is);
+//
+//				int count;
+//				byte data[] = new byte[1024];
+//				while ((count = bis.read(data, 0, data.length)) != -1) {
+//					ar.write(data, 0, count);
+//				}
+//				bis.close();
+//				ar.closeArchiveEntry();
+//
+//			}
+//
+//		}
+//
+//		ar.close();
+//	}
 
 }