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Posted to yarn-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2013/03/04 16:47:12 UTC

[jira] [Created] (YARN-448) Remove unnecessary hflush from log aggregation

Kihwal Lee created YARN-448:
-------------------------------

             Summary: Remove unnecessary hflush from log aggregation
                 Key: YARN-448
                 URL: https://issues.apache.org/jira/browse/YARN-448
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 0.23.7, 2.0.4-beta
            Reporter: Kihwal Lee
            Assignee: Kihwal Lee


AggregatedLogFormat#writeVersion() calls hflush() after writing the version. Calling hflush does not seem to be necessary. It can add a lot of load to hdfs in a big busy cluster.

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