diff --git a/build.gradle b/build.gradle
index 59c3b21..ea54276 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 
 java {
     group = 'eu.openaire.urls_controller'
-    version = '2.4.0-SNAPSHOT'
+    version = '2.6.0-SNAPSHOT'
     sourceCompatibility = JavaVersion.VERSION_1_8
 }
 
diff --git a/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java b/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
index 5d2041b..34768ad 100644
--- a/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
+++ b/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
@@ -350,7 +350,7 @@ public class UrlsServiceImpl implements UrlsService {
                 else if ( hasPayloadParquetFileProblem )
                     logger.error("The single payload-parquet-file failed to be created or uploaded! Will avoid to execute load-requests into the database-table \"payload_aggregated\", for batch-assignments_" + curReportAssignmentsCounter);
                 else
-                    logger.debug("Going to execute \"load\"-requests on the database, for the uploaded parquet-files.");
+                    logger.debug("Going to execute \"load\"-requests on the database, for the uploaded parquet-files, for batch-assignments_" + curReportAssignmentsCounter);
             }
 
             // Load all the parquet files of each type into its table.
@@ -471,9 +471,9 @@ public class UrlsServiceImpl implements UrlsService {
 
     private boolean mergeWorkerRelatedTables(String curWorkerId, long curReportAssignmentsCounter, boolean hasAttemptParquetFileProblem, boolean hasPayloadParquetFileProblem)
     {
-        logger.debug("Going to merge the parquet files for the tables which were altered.");
+        logger.debug("Going to merge the parquet files for the tables which were altered, for batch-assignments_" + curReportAssignmentsCounter);
         // When the uploaded parquet files are "loaded" into the tables, they are actually moved into the directory which contains the data of the table.
-        // This means that over time a table may have thousands of parquet files and the search through them will be very slow. Thus, we merge them every now and then.
+        // This means that over time a table may have thousands of parquet files and the search through them will be very slow. Thus, we merge them regularly.
 
         String mergeErrorMsg;
 
@@ -498,7 +498,7 @@ public class UrlsServiceImpl implements UrlsService {
         }
 
         DatabaseConnector.databaseLock.unlock();
-        logger.debug("Finished merging the database tables.");
+        logger.debug("Finished merging the database tables, for batch-assignments_" + curReportAssignmentsCounter);
         return true;
     }
 
diff --git a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
index df6c984..174df78 100644
--- a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
+++ b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
@@ -214,9 +214,9 @@ public class FileUtils {
             workerIp = workerInfo.getWorkerIP();    // This won't be null.
 
         // Get the file-locations.
-        final AtomicInteger numPayloadsToBeHandled = new AtomicInteger();
-        final AtomicInteger numFullTextsFound = new AtomicInteger();
-        final AtomicInteger numFilesFoundFromPreviousAssignmentsBatches = new AtomicInteger();
+        final AtomicInteger numPayloadsToBeHandled = new AtomicInteger(0);
+        final AtomicInteger numFullTextsFound = new AtomicInteger(0);
+        final AtomicInteger numFilesFoundFromPreviousAssignmentsBatches = new AtomicInteger(0);
 
         SetMultimap<String, Payload> allFileNamesWithPayloads = Multimaps.synchronizedSetMultimap(HashMultimap.create((sizeOfUrlReports / 5), 3));    // Holds multiple values for any key, if a fileName(key) has many IDs(values) associated with it.