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Posted to yarn-dev@hadoop.apache.org by "Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org> on 2012/10/19 02:00:03 UTC

[jira] [Created] (YARN-171) NodeManager should serve logs directly if log-aggregation is not enabled

Vinod Kumar Vavilapalli created YARN-171:
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             Summary: NodeManager should serve logs directly if log-aggregation is not enabled
                 Key: YARN-171
                 URL: https://issues.apache.org/jira/browse/YARN-171
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 0.23.3
            Reporter: Vinod Kumar Vavilapalli


NodeManagers never serve logs for completed applications. If log-aggregation is not enabled, in the interim, due to bugs like YARN-162, this is a serious problem for users as logs are necessarily not available.

We should let nodes serve logs directly if YarnConfiguration.LOG_AGGREGATION_ENABLED is set. This should be okay as NonAggregatingLogHandler can retain logs upto YarnConfiguration.NM_LOG_RETAIN_SECONDS.

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