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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3859) Increment a counter when a Scanner lease expires
Date Fri, 07 Sep 2012 04:34:08 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13450336#comment-13450336

Elliott Clark commented on HBASE-3859:

I would be +0 as things stand currently.  This isn't a patch for trunk and will require some
work to apply, and right now in my opinion the current version of the patch is not really
using the Metrics1 classes correctly.
> Increment a counter when a Scanner lease expires
> ------------------------------------------------
>                 Key: HBASE-3859
>                 URL: https://issues.apache.org/jira/browse/HBASE-3859
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics, regionserver
>    Affects Versions: 0.90.2
>            Reporter: Benoit Sigoure
>            Assignee: Mubarak Seyed
>            Priority: Minor
>         Attachments: HBASE-3859.trunk.v1.patch
> Whenever a Scanner lease expires, the RegionServer will close it automatically and log
a message to complain.  I would like the RegionServer to increment a counter whenever this
happens and expose this counter through the metrics system, so we can plug this into our monitoring
system (OpenTSDB) and keep track of how frequently this happens.  It's not supposed to happen
frequently so it's good to keep an eye on it.

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