diff --git a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
index 1a98a2513..bc6778f52 100644
--- a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml
@@ -115,6 +115,11 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+        	<name>sparkMaxExecutorsForIndexing</name>
+        	<value>8</value>
+        	<description>Max number of workers for ElasticSearch indexing</description>
+        </property>
     </parameters>
 
     <global>
@@ -498,7 +503,7 @@
             <spark-opts>
                 --executor-memory=${sparkExecutorMemory}
                 --driver-memory=${sparkDriverMemory}
-                --conf spark.dynamicAllocation.maxExecutors="8" 
+                --conf spark.dynamicAllocation.maxExecutors=${sparkMaxExecutorsForIndexing} 
                 --conf spark.extraListeners=${spark2ExtraListeners}
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
@@ -580,7 +585,7 @@
             <spark-opts>
                 --executor-memory=${sparkExecutorMemory}
                 --driver-memory=${sparkDriverMemory}
-                --conf spark.dynamicAllocation.maxExecutors="8" 
+                --conf spark.dynamicAllocation.maxExecutors=${sparkMaxExecutorsForIndexing} 
                 --conf spark.extraListeners=${spark2ExtraListeners}
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
diff --git a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/notifications_only/oozie_app/workflow.xml b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/notifications_only/oozie_app/workflow.xml
index d2d7b6d11..0d226d78e 100644
--- a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/notifications_only/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/notifications_only/oozie_app/workflow.xml
@@ -98,6 +98,11 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+        	<name>sparkMaxExecutorsForIndexing</name>
+        	<value>8</value>
+        	<description>Max number of workers for ElasticSearch indexing</description>
+        </property>
     </parameters>
 
     <global>
@@ -159,7 +164,7 @@
             <spark-opts>
                 --executor-memory=${sparkExecutorMemory}
                 --driver-memory=${sparkDriverMemory}
-                --conf spark.dynamicAllocation.maxExecutors="8" 
+                --conf spark.dynamicAllocation.maxExecutors=${sparkMaxExecutorsForIndexing} 
                 --conf spark.extraListeners=${spark2ExtraListeners}
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
diff --git a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/reindex/oozie_app/workflow.xml b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/reindex/oozie_app/workflow.xml
index 9095004ad..87adfffaa 100644
--- a/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/reindex/oozie_app/workflow.xml
+++ b/dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/reindex/oozie_app/workflow.xml
@@ -75,6 +75,11 @@
             <name>spark2EventLogDir</name>
             <description>spark 2.* event log dir location</description>
         </property>
+        <property>
+        	<name>sparkMaxExecutorsForIndexing</name>
+        	<value>8</value>
+        	<description>Max number of workers for ElasticSearch indexing</description>
+        </property>
     </parameters>
 
     <global>
@@ -112,7 +117,7 @@
             <spark-opts>
                 --executor-memory=${sparkExecutorMemory}
                 --driver-memory=${sparkDriverMemory}
-                --conf spark.dynamicAllocation.maxExecutors="8" 
+                --conf spark.dynamicAllocation.maxExecutors=${sparkMaxExecutorsForIndexing}
                 --conf spark.extraListeners=${spark2ExtraListeners}
                 --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
                 --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}