Restore the HBase configuration

From the Ambari server host, determine whether your current HBase configuration must be restored:

/var/lib/ambari-server/resources/scripts/configs.py -u [AMBARI_USER] -p
            [AMBARI_PW] -port [AMBARI_PORT] get localhost [CLUSTER_NAME]
          hbase-site

Use the environment variables that you set up when preparing the Ambari server host for rollback for the variable names.

If hbase.rootdir is set to the NameService ID you set up using the Enable NameNode HA wizard, you must revert hbase-site to non-HA values. For example, in "hbase.rootdir":"hdfs://[name-service-id]:8020/apps/hbase/data", the hbase.rootdir property points to the NameService ID and the value must be rolled back.
If hbase.rootdir points instead to a specific NameNode host, it does not need to be rolled back. For example, in "hbase.rootdir":"hdfs://[nn01.mycompany.com]:8020/apps/hbase/data", the hbase.rootdir property points to a specific NameNode host and not a NameService ID. This does not need to be rolled back; you can proceed to delete ZooKeeper failover controllers.

If you must roll back the hbase.rootdir value, on the Ambari Server host, use the config.sh script to make the necessary change:

/var/lib/ambari-server/resources/scripts/configs.py -u [AMBARI_USER]
            -p[AMBARI_PW] -port [AMBARI_PORT] set localhost [CLUSTER_NAME] hbase-site hbase.rootdir
            hdfs://[NAMENODE_HOSTNAME]:8020/apps/hbase/data

Use the environment variables that you set up when preparing the Ambari server host for rollback for the variable names.

For Ambari 2.6.0 and higher, config.sh is not supported and will fail. Use config.py instead.

On the Ambari server host, verify that the hbase.rootdir property has been restored properly:

/var/lib/ambari-server/resources/scripts/configs.py -u [AMBARI_USER] -p
            [AMBARI_PW] -port [AMBARI_PORT] get localhost [CLUSTER_NAME]
          hbase-site

The hbase.rootdir property should now be the same as the NameNode hostname, not the NameService ID.