7.3. Downgrade HBase Master(s)

During the downgrade process, running jobs should continue to make progress without restarting.

If there is an unforeseen error during upgrade, run the following command to restore data:

echo "snapshot_restore '20140917'" | hbase shell

Downgrade each HBase Master one by one. Shut down the HBase Master process, switch to the previous version, and start the process:

su - hbase -c "/usr/hdp/current/hbase-master/bin/hbase-daemon.sh stop master"

hdp-select set hbase-master

su - hbase -c "/usr/hdp/current/hbase-master/bin/hbase-daemon.sh start master"

Continue with the next downgrade step.

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