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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4421) Improve memory usage by ORC dictionaries
Date Thu, 02 May 2013 16:12:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13647660#comment-13647660
] 

Phabricator commented on HIVE-4421:
-----------------------------------

ashutoshc has accepted the revision "HIVE-4421 [jira] Improve memory usage by ORC dictionaries".

  +1 will commit if tests pass.

REVISION DETAIL
  https://reviews.facebook.net/D10545

BRANCH
  h-4421

ARCANIST PROJECT
  hive

To: JIRA, ashutoshc, omalley

                
> Improve memory usage by ORC dictionaries
> ----------------------------------------
>
>                 Key: HIVE-4421
>                 URL: https://issues.apache.org/jira/browse/HIVE-4421
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.11.0
>
>         Attachments: HIVE-4421.D10545.1.patch, HIVE-4421.D10545.2.patch, HIVE-4421.D10545.3.patch,
HIVE-4421.D10545.4.patch
>
>
> Currently, for tables with many string columns, it is possible to significantly underestimate
the memory used by the ORC dictionaries and cause the query to run out of memory in the task.


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