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Posted to issues@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2019/01/09 23:59:00 UTC

[jira] [Resolved] (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 resolved HIVE-12451.
-----------------------------------
          Resolution: Fixed
       Fix Version/s: 3.0.0
        Release Note: Concatenate is now supported on Acid tables
    Target Version/s: 3.0.0, 1.3.0  (was: 1.3.0, 3.0.0)

> 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
>             Fix For: 3.0.0
>
>
> 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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