question how to see metrics per region server in Archives of Support Questions (Read Only)

how to see metrics per region server

vishnuhr — Mon, 28 Dec 2015 22:50:18 GMT

currently in ambari 2.1.2

i can see metrics for ALL region servers when i create a widget.

can i create metrics per region server.

objective: Find out whether hot spotting is occurring or not.

Currently i am at a loss,because all metrics for hbase rs are AGGREGATED

Re: how to see metrics per region server

vishnuhr — Mon, 28 Dec 2015 22:50:19 GMT

i tried steps here

http://docs.hortonworks.com/HDPDocuments/Ambari-2.1.1.0/bk_ambari_reference_guide/content/_enabling_hbase_region_and_table_metrics.html

but no effect

Re: how to see metrics per region server

rahulpathak109 — Tue, 29 Dec 2015 17:56:12 GMT

You can use https://github.com/u39kun/ambari-grafana

It has just been updated to segregate by server.

Re: how to see metrics per region server

aervits — Tue, 29 Dec 2015 22:43:39 GMT

you can also go to HBase UI and look at each regionserver individually. You don't need a graphical tool to identify hot-spotting.

Re: how to see metrics per region server

vishnuhr — Wed, 30 Dec 2015 10:15:47 GMT

hi Rahul

this is helpful. i got grafana up but i notice the dashboard metric queries are again based on

aggregated values when i select region server as a component. screen-shot-2015-12-30-at-101503-am.png

is there a way to see per host/region server the metric ?

Re: how to see metrics per region server

vishnuhr — Wed, 30 Dec 2015 10:19:25 GMT

Hi Artem,

agree we don't need ui per se for this. Hot spotting was just 1 use case.

At an aggregated level, its useful to see if something is abnormal. next step is to find out which region server/ host has abnormal behaviour.

Re: how to see metrics per region server

aervits — Wed, 30 Dec 2015 11:18:27 GMT

if the option to build the widget is not available, you can always file a jira @vishnu rao

Re: how to see metrics per region server

vishnuhr — Wed, 30 Dec 2015 21:06:16 GMT

i am able to see per host metrics now in ambari-grafana

git commit 5 hours ago 🙂

https://github.com/u39kun/ambari-grafana/commit/f6048e17a901183b5451b66e75d71184c1999fa5

Re: how to see metrics per region server

aervits — Wed, 30 Dec 2015 21:51:06 GMT

@vishnu rao alternatively, you can try building your own widget in Ambari, I'll be honest I didn't try it but as far as I know you can build widget per host or aggregated.

Re: how to see metrics per region server

aervits — Sat, 06 Feb 2016 04:13:39 GMT

@vishnu rao this solution is not scalable, if you have 100 RS servers, you'll need 100 widgets, no? Please accept the best answer to close.