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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12451) Orc fast file merging/concatenation should be disabled for ACID tables
Date Sat, 25 Mar 2017 21:44:41 GMT

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

Pengcheng Xiong updated HIVE-12451:
-----------------------------------
    Target Version/s: 1.3.0, 3.0.0  (was: 1.3.0, 2.2.0)

> 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: Alan Gates
>
> 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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