Disabling and Redeploying HDFS HA

Minimum Required Role: Cluster Administrator (also provided by Full Administrator)

  1. Go to the HDFS service.
  2. Select Actions > Disable High Availability.
  3. Select the hosts for the NameNode and the SecondaryNameNode and click Continue.
  4. Select the HDFS checkpoint directory and click Continue.
  5. Confirm that you want to take this action.
  6. Configuring the Hive Metastore to Use HDFS HA.

Cloudera Manager ensures that one NameNode is active, and saves the namespace. Then it stops the standby NameNode, creates a SecondaryNameNode, removes the standby NameNode role, and restarts all the HDFS services.