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https://issues.apache.org/jira/browse/HIVE-17526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16194653#comment-16194653
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Eugene Koifman commented on HIVE-17526:
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+1
> Disable conversion to ACID if table has _copy_N files on branch-1
> -----------------------------------------------------------------
>
> Key: HIVE-17526
> URL: https://issues.apache.org/jira/browse/HIVE-17526
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Reporter: Daniel Voros
> Assignee: Daniel Voros
> Fix For: 1.3.0
>
> Attachments: HIVE-17526.1-branch-1.patch
>
>
> As discussed in HIVE-16177, non-ACID to ACID conversion can lead to data loss
> if the table has *_copy_N files.
> The patch for HIVE-16177 is quite massive and would basically need a
> reimplementation to apply for branch-1 since the related code paths have
> diverged a lot. We could disable the conversion to ACID if there are *_copy_N
> files instead.
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