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https://issues.apache.org/jira/browse/HBASE-27494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17641434#comment-17641434
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Briana Augenreich commented on HBASE-27494:
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I've looked through the usages of ClientExceptionUtils.isMetaClearingException
and confirmed the AysncRequestFutureImpl.cleanServerCache is the only place not
tracking the cacheClearingException metric.
> Client meta cache clear by exception metrics are missing some cases
> -------------------------------------------------------------------
>
> Key: HBASE-27494
> URL: https://issues.apache.org/jira/browse/HBASE-27494
> Project: HBase
> Issue Type: Improvement
> Reporter: Bryan Beaudreault
> Assignee: Briana Augenreich
> Priority: Minor
>
> MetricsConnection has metrics for meta cache clears by server and region, and
> also metrics by exception type which triggered the clear. The metric by
> exception type is currently missing at least one instance (in
> AsyncRequestFutureImpl) where the cache is cleared due to an exception.
> We should do an audit of cache clear calls and ensure all the appropriate
> ones are tracked by exception too.
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