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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