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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2011/04/27 07:20:03 UTC

[jira] [Commented] (HIVE-2127) Improve stats gathering reliability by retries on failures

    [ https://issues.apache.org/jira/browse/HIVE-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025610#comment-13025610 ] 

Namit Jain commented on HIVE-2127:
----------------------------------

Also add the new configuration variables in the name of the jira

> Improve stats gathering reliability by retries on failures
> ----------------------------------------------------------
>
>                 Key: HIVE-2127
>                 URL: https://issues.apache.org/jira/browse/HIVE-2127
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: HIVE-2127.2.patch, HIVE-2127.patch
>
>
> Stats publishing and aggregation only try once and if there is any exception it will fail and return. If many mappers/reducers updating stats at the same time, it is very common to get lock timeout. We should make stats more reliable by retry when there is an SQLException.

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