question Re: Grafana HBase-Performance -> Operation Latencies -Scan Next shows 'No datapoints' in Archives of Support Questions (Read Only)

Grafana HBase-Performance -> Operation Latencies -Scan Next shows 'No datapoints'

mugdha — Mon, 19 Aug 2019 09:26:12 GMT

Ambari: 2.2.2

HDP : 2.4.2

Why do only these graphs show No datapoints?

sidwagle — Thu, 02 Mar 2017 02:26:49 GMT

Are you able to see other RegionServer metrics on this dashboard?

I checked out my test cluster with HDP 2.6 and Ambari 2.5 and I am able to see them.

One way to verify if these metrics were ever sent to AMS is by making a call to AMS metadata API in your browser:

You can look for metrics name in the response, example: regionserver.Server.ScanTime

mugdha — Sat, 04 Mar 2017 09:38:01 GMT

Yes I can see other HBase metrics.

I do not see "regionserver.Server.ScanTime" in the metadata.

sidwagle — Fri, 10 Mar 2017 05:53:09 GMT

hdp242-s1.openstacklocal: Doesn't resolve for me.

If the metric is not in metadata that means that HBase has never sent this metric to AMS.

Did you perform a scan / run Ambari Smoke test to see if any data is sent?

Could be this metric is not sent by the HBase version you are using?