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From "Mubarak Seyed (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5189) Add metrics to keep track of region-splits in RS
Date Sat, 14 Jan 2012 02:02:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13186062#comment-13186062

Mubarak Seyed commented on HBASE-5189:

Waiting for corporate approval to contribute this patch. Thanks.
> Add metrics to keep track of region-splits in RS
> ------------------------------------------------
>                 Key: HBASE-5189
>                 URL: https://issues.apache.org/jira/browse/HBASE-5189
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics, regionserver
>    Affects Versions: 0.92.0, 0.90.5
>            Reporter: Mubarak Seyed
>            Assignee: Mubarak Seyed
>            Priority: Minor
>              Labels: noob
> For write-heavy workload with region-size 1 GB, region-split is considerably high. We
do normally grep the NN log (grep "mkdir*.split" NN.log | sort | uniq -c) to get the count.
> I would like to have a counter incremented each time region-split execution succeeds
and this counter exposed via the metrics stuff in HBase.
> - regionSplitSuccessCount
> - regionSplitFailureCount (will help us to correlate the timestamp range in RS logs across
all RS)

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