question Re: Cloudera datasource - How do I get number of Hbase regions per server? in Support Questions

Cloudera datasource - How do I get number of Hbase regions per server?

sgenchev — Tue, 21 Apr 2026 07:55:39 GMT

Hello,

I want to graph number of HBase regions per regionserver. In Ambari there was a metric regionserver.Server.regionCount, that provided just that. In CM the closest query I could find is "select regions_across_regionservers" that shows me an average number of regions per server. Average is useful, but I want to track per server data.

I know how to get it from command line, or from master web gui. I am looking specifically for datasource query so I can graph it with grafana.

Thank you!

Re: Cloudera datasource - How do I get number of Hbase regions per server?

smdas — Wed, 22 Jun 2022 07:15:45 GMT

Hello @sgenchev

While I am not familiar with building Charts to answer the Query, I shall share a few CLI approaches:

(I) HBCK: Running "hbase hbck --details" prints [1] detailing the Regions per RegionServer.

(II) Using JMX: Say, the HMaster UI is "http://HMaster1:22002/master-status".

Replace "master-status" with "jmx", which prints the JSON Output. Additional filtering can be done to capture the Regions per RegionServers.

Regards, Smarak

[1] HBCK Output:

RegionServer: RegionServer1,22101,1655811831192 number of regions: 1

RegionServer: RegionServer2,22101,1655811830393 number of regions: 1

RegionServer: RegionServer2,22101,1655811832307 number of regions: 1

Re: Cloudera datasource - How do I get number of Hbase regions per server?

smdas — Wed, 06 Jul 2022 14:41:54 GMT

Hello @sgenchev

We hope your Q concerning identifying the Region/RegionServers was addressed by our 06/22 Post. As such, We shall mark the Post as Resolved. If you have any concerns, Feel free to update the Post & we shall get back to you accordingly.

Regards, Smarak