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https://issues.apache.org/jira/browse/HIVE-18380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317467#comment-16317467
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Sergey Shelukhin commented on HIVE-18380:
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[~ekoifman] [~steveyeom2017] should it be? Alter table concatenate that
preserves txn boundaries (i.e. concats files in each directory separately)
would generally be pointless, and destroying txn boundaries to combined
directories is basically a compaction and should be done by compactor, as far
as I understand
> ALTER TABLE CONCATENATE is not supported on Micro-managed table
> ---------------------------------------------------------------
>
> Key: HIVE-18380
> URL: https://issues.apache.org/jira/browse/HIVE-18380
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 3.0.0
> Reporter: Steve Yeom
> Priority: Minor
>
> ALTER TABLE CONCATENATE is not supported on Micro-managed table.
> Example qtest is "alter_merge_2_orc.q" and the unsupportability is revealed
> when we start with tables in micro-managed table type(insert_only
> transactional).
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