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Posted to yarn-dev@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/03/26 17:09:16 UTC

[jira] [Resolved] (YARN-1881) configuration for performance tuning

     [ https://issues.apache.org/jira/browse/YARN-1881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla resolved YARN-1881.
------------------------------------

    Resolution: Invalid

Marking it as "Invalid" for now. We can always re-open once we find a more specific root cause.

> configuration for performance tuning
> ------------------------------------
>
>                 Key: YARN-1881
>                 URL: https://issues.apache.org/jira/browse/YARN-1881
>             Project: Hadoop YARN
>          Issue Type: Test
>          Components: nodemanager
>    Affects Versions: 2.2.0
>            Reporter: rrim
>
> Hi,
> my MR jobs run very slow on hadoop, some block in reduce tasks
> -input data is small, number of splits is 2 
> -memory is available ('free -m' shows a usage under 4GB per node), each node has 32GB
> -yarnchild(s) are consuming 100% CPU (tests with "top")
> and I don't find ways to improve performance 
> best



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