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https://issues.apache.org/jira/browse/HIVE-12643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15288149#comment-15288149
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Nita Dembla commented on HIVE-12643:
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I've tested a slightly modified version of the patch. Original changes to
following files were rejected
- ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java
- ql/src/java/org/apache/hadoop/hive/ql/exec/MapOperator.java
And following file needed modifications
- ql/src/java/org/apache/hadoop/hive/ql/plan/PartitionDesc.java
> For self describing InputFormat don't replicate schema information in
> partitions
> --------------------------------------------------------------------------------
>
> Key: HIVE-12643
> URL: https://issues.apache.org/jira/browse/HIVE-12643
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.0.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-12643.1.patch, HIVE-12643.2.patch,
> HIVE-12643.3.patch, HIVE-12643.3.patch, HIVE-12643.patch
>
>
> Since self describing Input Formats don't use individual partition schemas
> for schema resolution, there is no need to send that info to tasks.
> Doing this should cut down plan size.
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