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https://issues.apache.org/jira/browse/HIVE-13789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296039#comment-15296039
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Rui Li commented on HIVE-13789:
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Test failures cannot be reproduced locally.
> Repeatedly checking configuration in TextRecordWriter/Reader hurts performance
> ------------------------------------------------------------------------------
>
> Key: HIVE-13789
> URL: https://issues.apache.org/jira/browse/HIVE-13789
> Project: Hive
> Issue Type: Improvement
> Reporter: Rui Li
> Assignee: Rui Li
> Priority: Minor
> Attachments: HIVE-13789.1.patch
>
>
> We check configuration to decide whether to escape certain characters each
> time write/read a record for custom scripts.
> In our benchmark this becomes a hot spot method. And fixing it improves the
> execution of the custom script by 7% (3TB TPCx-BB dataset).
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