FAQ
TaskTracker could send an out-of-band heartbeat when the last running map/reduce completes
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Key: HADOOP-5129
URL: https://issues.apache.org/jira/browse/HADOOP-5129
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Affects Versions: 0.20.0
Reporter: Arun C Murthy
Assignee: Arun C Murthy


Currently the TaskTracker strictly respects the heartbeat interval, this causes utilization issues when all running tasks complete. We could send an out-of-band heartbeat in that case.

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postedJan 27, '09 at 9:31p
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