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https://issues.apache.org/jira/browse/HBASE-8355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13657363#comment-13657363
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Jesse Yates commented on HBASE-8355:
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Hmm, QA seems a bit slow... Ran tests locally - looked good. Planning to commit
this evening, unless there are any objections.
> BaseRegionObserver#pre(Compact|Flush|Store)ScannerOpen returns null
> -------------------------------------------------------------------
>
> Key: HBASE-8355
> URL: https://issues.apache.org/jira/browse/HBASE-8355
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors
> Affects Versions: 0.98.0, 0.94.8, 0.95.1
> Reporter: Andrew Purtell
> Assignee: Jesse Yates
> Attachments: 8355-0.94.patch, 8355.patch, hbase-8355-trunk-v0.patch,
> hbase-8355-trunk-v1.patch
>
>
> As pointed out in https://github.com/forcedotcom/phoenix/pull/131,
> BaseRegionObserver#preCompactScannerOpen returns null by default, which hoses
> any coprocessors down the line, making override of this method mandatory. The
> fix is trivial, patch coming momentarily.
> Update:
> This same behavior is present in the Flush and Store versions of the same
> method - this should all be moved to the proposed 'return passed scanner'
> default behavior.
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