- Update the code which acquires the "IMPALA_HDFS_NODE", to test the "tmp"-dir, instead of the base-dir and introduce retries, to overcome potential file-system failures. This change was suggested by "Sebastian Tymkow" and "Grzegorz Bakalarski".

- Fix typos.

dhp-workflows/dhp-stats-hist-snaps/src/main/resources/eu/dnetlib/dhp/oa/graph/stats-hist-snaps/oozie_app/copyDataToImpalaCluster.sh

@@ -9,15 +9,27 @@ fi
 export HADOOP_USER_NAME=$2
 
 IMPALA_HDFS_NODE=''
-if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu >/dev/null 2>&1; then
+COUNTER=0
+
+while [ $COUNTER -lt 3 ]; do
+  if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn1.openaire.eu:8020'
-elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu >/dev/null 2>&1; then
+      break
+  elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn2.openaire.eu:8020'
+      break
   else
-    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER!\n\n"
+      IMPALA_HDFS_NODE=''
+      sleep 1
+  fi
+  ((COUNTER++))
+done
+
+if [ -z "$IMPALA_HDFS_NODE" ]; then
+    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER! $COUNTER\n\n"
     exit 1
 fi
-echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE}"
+echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE} , after ${COUNTER} retries."
 
 
 function copydb() {

dhp-workflows/dhp-stats-monitor-irish/src/main/resources/eu/dnetlib/dhp/oa/graph/stats-monitor-irish/oozie_app/copyDataToImpalaCluster.sh

@@ -9,15 +9,28 @@ fi
 export HADOOP_USER_NAME=$2
 
 IMPALA_HDFS_NODE=''
-if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu >/dev/null 2>&1; then
+COUNTER=0
+
+while [ $COUNTER -lt 3 ]; do
+  if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn1.openaire.eu:8020'
-elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu >/dev/null 2>&1; then
+      break
+  elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn2.openaire.eu:8020'
+      break
   else
-    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER!\n\n"
+      IMPALA_HDFS_NODE=''
+      sleep 1
+  fi
+  ((COUNTER++))
+done
+
+if [ -z "$IMPALA_HDFS_NODE" ]; then
+    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER! $COUNTER\n\n"
     exit 1
 fi
-echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE}"
+echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE} , after ${COUNTER} retries."
+
 
 function copydb() {
 

dhp-workflows/dhp-stats-monitor-update/src/main/resources/eu/dnetlib/dhp/oa/graph/stats-monitor/oozie_app/copyDataToImpalaCluster.sh

@@ -9,15 +9,28 @@ fi
 #export HADOOP_USER_NAME=$2
 
 IMPALA_HDFS_NODE=''
-if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu >/dev/null 2>&1; then
+COUNTER=0
+
+while [ $COUNTER -lt 3 ]; do
+  if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn1.openaire.eu:8020'
-elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu >/dev/null 2>&1; then
+      break
+  elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn2.openaire.eu:8020'
+      break
   else
-    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER!\n\n"
+      IMPALA_HDFS_NODE=''
+      sleep 1
+  fi
+  ((COUNTER++))
+done
+
+if [ -z "$IMPALA_HDFS_NODE" ]; then
+    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER! $COUNTER\n\n"
     exit 1
 fi
-echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE}"
+echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE} , after ${COUNTER} retries."
+
 
 function copydb() {
 

dhp-workflows/dhp-stats-update/src/main/resources/eu/dnetlib/dhp/oa/graph/stats/oozie_app/copyDataToImpalaCluster.sh

@@ -7,15 +7,28 @@ then
 fi
 
 IMPALA_HDFS_NODE=''
-if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu >/dev/null 2>&1; then
+COUNTER=0
+
+while [ $COUNTER -lt 3 ]; do
+  if hdfs dfs -test -e hdfs://impala-cluster-mn1.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn1.openaire.eu:8020'
-elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu >/dev/null 2>&1; then
+      break
+  elif hdfs dfs -test -e hdfs://impala-cluster-mn2.openaire.eu/tmp >/dev/null 2>&1; then
       IMPALA_HDFS_NODE='hdfs://impala-cluster-mn2.openaire.eu:8020'
+      break
   else
-    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER!\n\n"
+      IMPALA_HDFS_NODE=''
+      sleep 1
+  fi
+  ((COUNTER++))
+done
+
+if [ -z "$IMPALA_HDFS_NODE" ]; then
+    echo -e "\n\nPROBLEM WHEN SETTING THE HDFS-NODE FOR IMPALA CLUSTER! $COUNTER\n\n"
     exit 1
 fi
-echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE}"
+echo "Active IMPALA HDFS Node: ${IMPALA_HDFS_NODE} , after ${COUNTER} retries."
+
 
 export HADOOP_USER_NAME=$6
 export PROD_USAGE_STATS_DB="openaire_prod_usage_stats"

dhp-workflows/dhp-stats-update/src/main/resources/eu/dnetlib/dhp/oa/graph/stats/oozie_app/monitor.sh

@@ -85,12 +85,12 @@ hive $HIVE_OPTS --database ${2}_funded -e "show tables" | grep -v WARN | sed "s/
 hive -f foo
 echo "Updated shadow monitor funded database"
 
-echo "Updating shadow monitor insitutions database"
+echo "Updating shadow monitor institutions database"
 hive -e "drop database if exists ${SHADOW}_institutions cascade"
 hive -e "create database if not exists ${SHADOW}_institutions"
 hive $HIVE_OPTS --database ${2}_institutions -e "show tables" | grep -v WARN | sed "s/\(.*\)/create view ${SHADOW}_institutions.\1 as select * from ${2}_institutions.\1;/" > foo
 hive -f foo
-echo "Shadow db monitor insitutions ready!"
+echo "Shadow db monitor institutions ready!"
 
 echo "Updating shadow monitor RIs database"
 for i in $contexts