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https://issues.apache.org/jira/browse/HBASE-6377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413298#comment-13413298
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Andrew Purtell commented on HBASE-6377:
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bq. The histogram could be dominated by the bulk insert operation.
If you mean Put(List) or MultiAction, each dispatch down to HRegion is
individually accounted. A big limitation we have with this approach of
measuring at HRI is we can't drop down into the region to account for each op
individually. Current 0.94 patch maintains how the HBASE-5533 patch did it.
I believe such issues of larger rethinking were what Lars had in mind in
comments above. TBD.
> HBASE-5533 metrics miss all operations submitted via MultiAction
> ----------------------------------------------------------------
>
> Key: HBASE-6377
> URL: https://issues.apache.org/jira/browse/HBASE-6377
> Project: HBase
> Issue Type: Bug
> Components: metrics, regionserver
> Affects Versions: 0.96.0, 0.94.1
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Fix For: 0.94.2
>
> Attachments: 6377-0.94.patch, 6377-trunk-simple.patch, 6377.patch
>
>
> A client application (LoadTestTool) calls put() on HTables. Internally to the
> HBase client those puts are batched into MultiActions. The total number of
> put operations shown in the RegionServer's put metrics histogram never
> increases from 0 even though millions of such operations are made. Needless
> to say the latency for those operations are not measured either. The value of
> HBASE-5533 metrics are suspect given the client will batch put and delete ops
> like this.
> I had a fix in progress but HBASE-6284 messed it up. Before, MultiAction
> processing in HRegionServer would distingush between puts and deletes and
> dispatch them separately. It was easy to account for the time for them. Now
> both puts and deletes are submitted in batch together as mutations.
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