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https://issues.apache.org/jira/browse/HIVE-21599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17633864#comment-17633864
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Stamatis Zampetakis commented on HIVE-21599:
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The summary of the ticket describes a problem but the current description does
not provide enough information to understand the problem neither the necessary
steps to reproduce it. Instead it outlines one possible solution that may not
be the correct/desired one.
[~soumyakanti.das] Please rework the description of the ticket and add
sufficient details to repro the problem. People should not need to jump in the
code to understand what the problem is. You can retain the proposed solution
which is there but make it clear that this is only one possibility.
> Parquet predicate pushdown on partition columns may cause wrong result if
> files contain partition columns
> ---------------------------------------------------------------------------------------------------------
>
> Key: HIVE-21599
> URL: https://issues.apache.org/jira/browse/HIVE-21599
> Project: Hive
> Issue Type: Improvement
> Components: Query Planning
> Reporter: Vineet Garg
> Assignee: Soumyakanti Das
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21599.1.patch
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Filter predicates are pushed to Table Scan (to be pushed to and used by
> storage handler/input format). Such predicates could consist of partition
> columns which are of no use to storage handler or input formats. Therefore
> it should be removed from TS filter expression.
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