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https://issues.apache.org/jira/browse/PHOENIX-4957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16640497#comment-16640497
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Vincent Poon commented on PHOENIX-4957:
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FYI [~gjacoby][~tdsilva] quick review?
The hint in the subquery doesn't actually work, but it compiles fine. So when
the IndexTool grabs the select now, it should read from the data table.
> IndexTool incorrectly uses index when rebuilding an active index
> ----------------------------------------------------------------
>
> Key: PHOENIX-4957
> URL: https://issues.apache.org/jira/browse/PHOENIX-4957
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.14.0
> Reporter: Vincent Poon
> Assignee: Vincent Poon
> Priority: Major
> Attachments: PHOENIX-4957.4.x-HBase-1.3.patch
>
>
> If you want to leave an index active while rebuilding (e.g. an immutable
> index), the IndexTool selects from the index table instead of the data table.
> This is because it uses PostIndexDDLCompiler which builds an UpsertSelect
> statement with a NO_INDEX hint, but the IndexTool only uses the Select
> portion which has no hint.
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