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https://issues.apache.org/jira/browse/PHOENIX-4057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111757#comment-16111757
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Vincent Poon commented on PHOENIX-4057:
---------------------------------------

[~jamestaylor] I guess this would also mean we can't run a scrutiny as of an 
older timestamp?  As that would essentially be a point-in-time query comparison 
of data vs index table, and there could potentially be data table writes 
without corresponding index updates with this change?

> 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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