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https://issues.apache.org/jira/browse/HIVE-7071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14015124#comment-14015124
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Vikram Dixit K commented on HIVE-7071:
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[~xuefuz] can you take a quick look?
https://reviews.apache.org/r/22122/
Raised HIVE-7162 for follow on.
> Use custom Tez split generator to support schema evolution
> ----------------------------------------------------------
>
> Key: HIVE-7071
> URL: https://issues.apache.org/jira/browse/HIVE-7071
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Fix For: 0.14.0
>
> Attachments: HIVE-7071.1.patch, HIVE-7071.2.patch,
> HIVE-7071.hadoop1.patch
>
>
> Right now we're falling back to combinehivefileinputformat and switch of am
> side grouping when there's different schemata in a single vertex. We need to
> handle this in a custom initializer so we can still group on the AM.
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