HiveServer2 and HiveMetaStore GC logging with TimeStamp

[#1]

The HiveServer2 and HiveMetaStore can be configured for captured the GC logs based on Timestamp. This is useful in a production cluster, where having a timestamp on the log file add clarity and also avoids overwritting.

Navigate as below in Ambari:

Ambari UI > Hive > Configs > Advanced hive-env > hive-env template

Add following :

if [ "$SERVICE" = "metastore" ]; then
  export HADOOP_HEAPSIZE={{hive_metastore_heapsize}} # Setting for HiveMetastore
else
  export HADOOP_HEAPSIZE={{hive_heapsize}} # Setting for HiveServer2 and Client
fi


export HADOOP_CLIENT_OPTS="-Xmx${HADOOP_HEAPSIZE}m -Xloggc:/var/log/hive/gc.log-$SERVICE-`date +'%Y%m%d%H%M'`
-XX:ErrorFile=/var/log/hive/hive-metastore-error.log-`date +'%Y%m%d%H%M'` -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps $HADOOP_CLIENT_OPTS"

if [ "$SERVICE" = "hiveserver2" ]; then
export HADOOP_CLIENT_OPTS="-Xmx${HADOOP_HEAPSIZE}m -Xloggc:/var/log/hive/gc.log-$SERVICE-`date +'%Y%m%d%H%M'`
-XX:ErrorFile=/var/log/hive/hive-server2-error.log-`date +'%Y%m%d%H%M'` -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps $HADOOP_CLIENT_OPTS"
fi