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https://issues.apache.org/jira/browse/HBASE-5292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13226416#comment-13226416
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Phabricator commented on HBASE-5292:
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mbautin has accepted the revision "[jira] [HBASE-5292] Prevent counting getSize
on compactions".
REVISION DETAIL
https://reviews.facebook.net/D1617
BRANCH
getsize
> getsize per-CF metric incorrectly counts compaction related reads as well
> --------------------------------------------------------------------------
>
> Key: HBASE-5292
> URL: https://issues.apache.org/jira/browse/HBASE-5292
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.89.20100924
> Reporter: Kannan Muthukkaruppan
> Attachments:
> 0001-jira-HBASE-5292-Prevent-counting-getSize-on-compacti.patch,
> D1527.1.patch, D1527.2.patch, D1527.3.patch, D1527.4.patch, D1617.1.patch
>
>
> The per-CF "getsize" metric's intent was to track bytes returned (to HBase
> clients) per-CF. [Note: We already have metrics to track # of HFileBlock's
> read for compaction vs. non-compaction cases -- e.g., compactionblockreadcnt
> vs. fsblockreadcnt.]
> Currently, the "getsize" metric gets updated for both client initiated
> Get/Scan operations as well for compaction related reads. The metric is
> updated in StoreScanner.java:next() when the Scan query matcher returns an
> INCLUDE* code via a:
> HRegion.incrNumericMetric(this.metricNameGetsize, copyKv.getLength());
> We should not do the above in case of compactions.
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