When we take a look at HBase UI everything is normal (active-standby). We've also checked via command line and it's normal (active-standby). We checked Ambari, but it says both are in Standby mode. How can we fix this?
I believe you are hitting AMBARI-4604.
I have a 3-node cluster deployed, with two HBase Masters. The Ambari API also shows that c6403 is the active master and c6401 is the standby master (see metrics.hbase.master.IsActiveMaster), but the UI is not reflecting this (showing that both c6401 and c6403 are standby maters).
Thanks for the link sunile. Though ambari version I have is 126.96.36.199, looking at the patch and the current source for 188.8.131.52 it should be resolved though. What I see weird is that the API call for the host_components doesn't include the IsActiveMaster metric. Anyone finding the same problem?