You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Carl Steinbach (JIRA)" <ji...@apache.org> on 2011/07/27 06:15:10 UTC

[jira] [Updated] (HIVE-2127) Improve stats gathering reliability by retries on failures with hive.stats.retries.max and hive.stats.retries.wait

     [ https://issues.apache.org/jira/browse/HIVE-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl Steinbach updated HIVE-2127:
---------------------------------

      Component/s: Statistics
                   Query Processor
    Fix Version/s: 0.8.0

> Improve stats gathering reliability by retries on failures with hive.stats.retries.max and hive.stats.retries.wait
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2127
>                 URL: https://issues.apache.org/jira/browse/HIVE-2127
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor, Statistics
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>             Fix For: 0.8.0
>
>         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.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira