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https://issues.apache.org/jira/browse/HIVE-3926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13742373#comment-13742373
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Sergey Shelukhin commented on HIVE-3926:
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I got around to this yesterday, the "null" values are actually put in the expr
by PPRColumnExprProcessor in ExprProcFactory; it thus replaces non-partition
columns, many functions, etc. compactExpr in Pruner then compacts the nulls.
The root problem is that ExprNodeColumnDesc doesn't distinguish partition and
virtual columns, so partition columns also get there.
I will try to mitigate that in separate JIRA, however ExprNodeColumnDesc ctor
w/isPartitionColOrVirtualCol arg is called in many places, so if they call
cannot be easily replaced post-filtering can be done before expression gets to
the pruner.
> PPD on virtual column of partitioned table is not working
> ---------------------------------------------------------
>
> Key: HIVE-3926
> URL: https://issues.apache.org/jira/browse/HIVE-3926
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
> Fix For: 0.12.0
>
> Attachments: HIVE-3926.6.patch, HIVE-3926.D8121.1.patch,
> HIVE-3926.D8121.2.patch, HIVE-3926.D8121.3.patch, HIVE-3926.D8121.4.patch,
> HIVE-3926.D8121.5.patch
>
>
> {code}
> select * from src where BLOCK__OFFSET__INSIDE__FILE<100;
> {code}
> is working, but
> {code}
> select * from srcpart where BLOCK__OFFSET__INSIDE__FILE<100;
> {code}
> throws SemanticException. Disabling PPD makes it work.
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