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https://issues.apache.org/jira/browse/HIVE-14947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084884#comment-16084884
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Eugene Koifman commented on HIVE-14947:
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fixed via HIVE-16832
> Add support for Acid 2 in Merge
> -------------------------------
>
> Key: HIVE-14947
> URL: https://issues.apache.org/jira/browse/HIVE-14947
> Project: Hive
> Issue Type: Sub-task
> Components: Transactions
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Fix For: 3.0.0
>
>
> HIVE-14035 etc introduced a more efficient data layout for acid tables
> Additional work is needed to support Merge for these tables
> Need to make sure we generate unique ROW__IDs in each branch of the
> multi-insert statement. StatementId was introduced in HIVE-11030 but it's
> not surfaced from storage layer. It needs to be made part of ROW__ID to
> ensure unique ROW__ID from concurrent writes from the same query.
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