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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-6377) HBASE-5533 metrics miss all operations submitted via MultiAction
Date Fri, 13 Jul 2012 00:34:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413370#comment-13413370
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Andrew Purtell edited comment on HBASE-6377 at 7/13/12 12:34 AM:
-----------------------------------------------------------------

@Elliot we should do the same on trunk and fix up the UI.

Edit: Currently the only place those histograms are referenced are the Jamon templates.
                
      was (Author: apurtell):
    @Elliot we should do the same on trunk and fix up the UI.
                  
> 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: 0.94.1
>
>         Attachments: 6377-0.94-remove-get-put-delete-histograms.patch, 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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