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V.Karthikeyan commented on MAPREDUCE-1219: ------------------------------------------ Verified the Job metrics using FileContext property enabled. Ran jobs to verify the counters in sync with the Jobtracker UI and log file generated using FileContext enabled. > JobTracker Metrics causes undue load on JobTracker > -------------------------------------------------- > > 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 > Attachments: MAPREDUCE-1219.patch, patch-1219-ydist.txt > > > 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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.