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Posted to issues@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2019/01/09 23:56:00 UTC

[jira] [Assigned] (HIVE-12451) Orc fast file merging/concatenation should be disabled for ACID tables

     [ https://issues.apache.org/jira/browse/HIVE-12451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eugene Koifman reassigned HIVE-12451:
-------------------------------------

    Assignee: Eugene Koifman  (was: Alan Gates)

> Orc fast file merging/concatenation should be disabled for ACID tables
> ----------------------------------------------------------------------
>
>                 Key: HIVE-12451
>                 URL: https://issues.apache.org/jira/browse/HIVE-12451
>             Project: Hive
>          Issue Type: Bug
>          Components: ORC, Transactions
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Eugene Koifman
>            Priority: Major
>
> For ACID tables merging of small files should happen only through compaction. We should disable "alter table .. concatenate" for ACID tables. We should also disable ConditionalMergeFileTask if destination is an ACID table.



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