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