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https://issues.apache.org/jira/browse/HIVE-2218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049423#comment-13049423
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He Yongqiang commented on HIVE-2218:
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https://reviews.apache.org/r/898/
> speedup addInputPaths
> ---------------------
>
> Key: HIVE-2218
> URL: https://issues.apache.org/jira/browse/HIVE-2218
> Project: Hive
> Issue Type: Improvement
> Reporter: He Yongqiang
> Assignee: He Yongqiang
> Attachments: HIVE-2218.1.patch
>
>
> Speedup the addInputPaths for combined symlink inputformat, and added some
> other micro optimizations which also work for normal cases.
> This can help reducing the start time of one query from 5 hours to less than
> 20 mins.
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