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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-5291) Some cases where Phoenix does close scanners
Date Wed, 22 May 2019 05:27:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-5291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16845529#comment-16845529
] 

Anoop Sam John commented on PHOENIX-5291:
-----------------------------------------

At RS level we have at least the Lease mechanism which can close the missed scanner at least
at some later point of time. But these CP scanners should have been on Region directly.  As
Andy suggested lets open a Jira for undoing the ref count stuff ? Lets discuss there.

> Some cases where Phoenix does close scanners
> --------------------------------------------
>
>                 Key: PHOENIX-5291
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5291
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.15.0, 4.14.1, 4.14.2
>            Reporter: Lars Hofhansl
>            Priority: Critical
>         Attachments: 5291.txt
>
>
> With HBase 1.5 and later this is a disaster, as it causes the wrong reference counting
of HFiles in HBase, and those subsequently will *never* be removed until the region closes
and reopens for any reason.
> We found at least two cases... See comments below.



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