Enabling HDFS HA

Configuring HBase to Use HDFS HA

nothing to do
Upgrading the Hive Metastore to Use HDFS HA

Configuring Hue to Work with HDFS HA

add HttpFS role instance under HDFS

Restart the Hue service

Configuring Impala to Work with HDFS HA
impala-shell -i impala-daemon-host
[impala-daemon-host:21000] > INVALIDATE METADATA
restart the Impala service

Enabling YARN (MRv2) ResourceManager High Availability

Restart the JobHistory Server role

HBase High Availability

add a backup HBase Master to a different host than the one on which the active Master is running
(Optional): Llama High Availability

ok