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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2014/05/07 09:45:07 UTC
[jira] [Updated] (HIVE-6809) Support bulk deleting directories for
partition drop with partial spec
[ https://issues.apache.org/jira/browse/HIVE-6809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Navis updated HIVE-6809:
------------------------
Attachment: HIVE-6809.5.patch.txt
Rebased on trunk
> Support bulk deleting directories for partition drop with partial spec
> ----------------------------------------------------------------------
>
> Key: HIVE-6809
> URL: https://issues.apache.org/jira/browse/HIVE-6809
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Attachments: HIVE-6809.1.patch.txt, HIVE-6809.2.patch.txt, HIVE-6809.3.patch.txt, HIVE-6809.4.patch.txt, HIVE-6809.5.patch.txt
>
>
> In busy hadoop system, dropping many of partitions takes much more time than expected. In hive-0.11.0, removing 1700 partitions by single partial spec took 90 minutes, which is reduced to 3 minutes when deleteData is set false. I couldn't test this in recent hive, which has HIVE-6256 but if the time-taking part is mostly from removing directories, it seemed not helpful to reduce whole processing time.
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