HIVE-27969: Add verbose logging for schema initialisation and metasto…

…re service (apache#4972) (Akshat Mathur, reviewed by Zsolt Miskolczi, Zhihua Deng, Attila Turoczy, Kokila N)

packaging/src/docker/README.md

@@ -88,9 +88,17 @@ Launch the HiveServer2 with an embedded Metastore,
     docker run -d -p 10000:10000 -p 10002:10002 --env SERVICE_NAME=hiveserver2 \
          --env SERVICE_OPTS="-Dhive.metastore.uris=thrift://metastore:9083" \
          --env IS_RESUME="true" \
+         --env VERBOSE="true" \
          --name hiveserver2-standalone apache/hive:${HIVE_VERSION}
    ```
+
+NOTE:
+
+To skip schematool initialisation or upgrade for metastore use `IS_RESUME="true"`, and for verbose logging set `VERBOSE="true"`
+
+
   To save the data between container restarts, you can start the HiveServer2 with a Volume,
+
    ```shell
    docker run -d -p 10000:10000 -p 10002:10002 --env SERVICE_NAME=hiveserver2 \
       --env SERVICE_OPTS="-Dhive.metastore.uris=thrift://metastore:9083" \

packaging/src/docker/entrypoint.sh

@@ -22,13 +22,14 @@ set -x
 : ${DB_DRIVER:=derby}
 
 SKIP_SCHEMA_INIT="${IS_RESUME:-false}"
+[[ $VERBOSE = "true" ]] && VERBOSE_MODE="--verbose" || VERBOSE_MODE=""
 
 function initialize_hive {
   COMMAND="-initOrUpgradeSchema"
   if [ "$(echo "$HIVE_VER" | cut -d '.' -f1)" -lt "4" ]; then
      COMMAND="-${SCHEMA_COMMAND:-initSchema}"
   fi
-  $HIVE_HOME/bin/schematool -dbType $DB_DRIVER $COMMAND
+  $HIVE_HOME/bin/schematool -dbType $DB_DRIVER $COMMAND $VERBOSE_MODE
   if [ $? -eq 0 ]; then
     echo "Initialized schema successfully.."
   else
@@ -53,8 +54,8 @@ fi
 
 if [ "${SERVICE_NAME}" == "hiveserver2" ]; then
   export HADOOP_CLASSPATH=$TEZ_HOME/*:$TEZ_HOME/lib/*:$HADOOP_CLASSPATH
+  exec $HIVE_HOME/bin/hive --skiphadoopversion --skiphbasecp --service $SERVICE_NAME
 elif [ "${SERVICE_NAME}" == "metastore" ]; then
   export METASTORE_PORT=${METASTORE_PORT:-9083}
+  exec $HIVE_HOME/bin/hive --skiphadoopversion --skiphbasecp $VERBOSE_MODE --service $SERVICE_NAME
 fi
-
-exec $HIVE_HOME/bin/hive --skiphadoopversion --skiphbasecp --service $SERVICE_NAME