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https://issues.apache.org/jira/browse/HIVE-18587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16347687#comment-16347687
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Ashutosh Chauhan commented on HIVE-18587:
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+1 Patch fixes issue at hand.
However, traversing FS in move task will be expensive. List of new files
created should be communicated back from job to avoid this traversal. That
should be done in a follow-up.
> insert DML event may attempt to calculate a checksum on directories
> -------------------------------------------------------------------
>
> Key: HIVE-18587
> URL: https://issues.apache.org/jira/browse/HIVE-18587
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
> Attachments: HIVE-18587.patch
>
>
> Looks like in union case, some code path may pass directories in newFiles.
> Probably legacy copyData/moveData; both seem to assume that these paths are
> files, but do not actually enforce it.
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