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https://issues.apache.org/jira/browse/PHOENIX-5291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16846022#comment-16846022
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Lars Hofhansl commented on PHOENIX-5291:
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I'll file an HBase jira to make this generally less fickle. The main problem is
that all coprocessors that run with lease removed can do a lot of damage now.
And even with the lease in place they can replace the passes scanner, in which
case the it won't be closed anymore. That was bad before, but now it's a much
worse.
I'll dig through the Phoenix code a bit more.
> 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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