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https://issues.apache.org/jira/browse/PHOENIX-4057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111492#comment-16111492
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James Taylor commented on PHOENIX-4057:
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Thanks for the review, [~samarthjain]. Yes, we'll want to release note it. It's
not a regression, though - it wouldn't have worked correctly in the past either.
> Do not issue index updates for out of order mutation during index maintenance
> ------------------------------------------------------------------------------
>
> Key: PHOENIX-4057
> URL: https://issues.apache.org/jira/browse/PHOENIX-4057
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: James Taylor
> Fix For: 4.12.0, 4.11.1
>
> Attachments: PHOENIX-4057_v1.patch, PHOENIX-4057_wip1.patch
>
>
> Index maintenance is not correct when rows arrive out of order (see
> PHOENIX-4052). In particular, out of order deletes end up with a spurious Put
> in the index. Rather than corrupt the secondary index, we can instead just
> ignore out-of-order mutations. The only downside is that point-in-time
> queries against an index will not work correctly.
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