Cloudera Docs

Prerequisites for enabling HDFS HA using

There are certain prerequisites that your cluster must satisfy before HDFS HA can be enabled using .

You must perform the following tasks before enabling HDFS HA:
  • Ensure that you perform all the required configuration and setup tasks.
  • Enabling and disabling HA causes a service outage for the HDFS service and all services that depend on HDFS. Before enabling or disabling HA, ensure that there are no jobs running on your cluster.
  • Ensure that you have a ZooKeeper service configured.