If you have MapR-DB in your cluster, you can use MapR-DB for persistent configuration storage. Using MapR-DB to store persistent configuration data can prevent memory strain on ZooKeeper in clusters running heavy workloads.
To change the persistent storage mode to MapR-DB, add or modify the
sys.store.provider block in
<drill_installation_directory>/conf/drill-override.conf on each Drill node and then restart the Drillbit service.
Issue the following command to restart the Drillbit on all Drill nodes:
maprcli node services -name drill-bits -action restart -nodes <node IP addresses separated by a space>