diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkDumpCommunityProducts.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkDumpCommunityProducts.java
index 6a1dced83..225b3d5bb 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkDumpCommunityProducts.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkDumpCommunityProducts.java
@@ -1,3 +1,7 @@
+/**
+ *Spark action to trigger the dump of results associated to research community - reseach initiative/infrasctructure
+ * The actual dump if performed via the class DumpProducts that is used also for the entire graph dump
+ */
 
 package eu.dnetlib.dhp.oa.graph.dump.community;
 
@@ -10,15 +14,12 @@ import org.slf4j.LoggerFactory;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.oa.graph.dump.DumpProducts;
-import eu.dnetlib.dhp.oa.graph.dump.QueryInformationSystem;
-import eu.dnetlib.dhp.oa.graph.dump.Utils;
 import eu.dnetlib.dhp.schema.dump.oaf.community.CommunityResult;
 import eu.dnetlib.dhp.schema.oaf.Result;
 
 public class SparkDumpCommunityProducts implements Serializable {
 
 	private static final Logger log = LoggerFactory.getLogger(SparkDumpCommunityProducts.class);
-	private static QueryInformationSystem queryInformationSystem;
 
 	public static void main(String[] args) throws Exception {
 		String jsonConfiguration = IOUtils
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkPrepareResultProject.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkPrepareResultProject.java
index a9d44d9c1..c7b0a76a9 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkPrepareResultProject.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkPrepareResultProject.java
@@ -1,3 +1,10 @@
+/**
+ * Preparation of the Project information to be added to the dumped results.
+ * For each result associated to at least one Project, a serialization of an instance af ResultProject closs is done.
+ * ResultProject contains the resultId, and the list of Projects (as in eu.dnetlib.dhp.schema.dump.oaf.community.Project)
+ * it is associated to
+ *
+ */
 
 package eu.dnetlib.dhp.oa.graph.dump.community;
 
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkSplitForCommunity.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkSplitForCommunity.java
index d190369f9..0eeb68c2d 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkSplitForCommunity.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/community/SparkSplitForCommunity.java
@@ -1,3 +1,7 @@
+/**
+ * Spark job to trigger the split of results associated to research community - reseach initiative/infrasctructure.
+ * The actual split is performed by the class CommunitySplit
+ */
 
 package eu.dnetlib.dhp.oa.graph.dump.community;