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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15135) Add metrics for storefile age
Date Thu, 28 Jan 2016 18:54:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15122101#comment-15122101

Mikhail Antonov commented on HBASE-15135:

I see.. thanks for looking into it!

I was suspecting this "patch process already existed" as indication of prohibited resubmission,
but was able to get it through after 2 or 3 attempts. Looks like sporadic failure. Given that
issue with incorrect (or non-deterministic) module reordering, does it make sense to turn
this flag on by default for HBase pre-commit jobs?

> Add metrics for storefile age
> -----------------------------
>                 Key: HBASE-15135
>                 URL: https://issues.apache.org/jira/browse/HBASE-15135
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Elliott Clark
>            Assignee: Mikhail Antonov
>         Attachments: HBASE-15135-v2.patch, HBASE-15135-v3.patch, HBASE-15135-v4.patch,
> In order to make sure that compactions are fully up to date it would be nice to have
metrics on:
> * Max storefile age
> * Min storefile age
> * Average storefile age
> * Number of reference files
> If we could have those metrics per region and per regionserver it would be awesome.

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