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Posted to mapreduce-dev@hadoop.apache.org by "Jothi Padmanabhan (JIRA)" <ji...@apache.org> on 2009/11/18 05:35:40 UTC

[jira] Created: (MAPREDUCE-1219) JobTracker Metrics causes undue load on JobTracker

JobTracker Metrics causes undue load on JobTracker
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                 Key: MAPREDUCE-1219
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1219
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 0.21.0
            Reporter: Jothi Padmanabhan
            Assignee: Amareshwari Sriramadasu


JobTrackerMetricsInst.doUpdates updates job-level counters of all running jobs into JobTracker's metrics causing very bad performance and hampers heartbeats. Since Job level metrics are better served by JobHistory, it may be a good idea to remove these from the metrics framework.

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