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https://issues.apache.org/jira/browse/PHOENIX-5666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17013174#comment-17013174
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Geoffrey Jacoby commented on PHOENIX-5666:
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+1, good catch.
> IndexRegionObserver incorrectly updates PostIndexUpdateFailure metric
> ---------------------------------------------------------------------
>
> Key: PHOENIX-5666
> URL: https://issues.apache.org/jira/browse/PHOENIX-5666
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 5.0.0, 4.14.3
> Reporter: Kadir OZDEMIR
> Assignee: Kadir OZDEMIR
> Priority: Major
> Attachments: PHOENIX-5666.master.001.patch
>
>
> When there is no post index (phase 3) updates (for tables with no indexes or
> during index rebuild), the list for index updates is not initialized by
> IndexRegionObserver. This causes a null pointer exception and this exception
> is caught and ignored since phase3 write failures are in general ignored.
> However, this leads to updating the PostIndexUpdateFailure metric incorrectly.
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