Metrics from the TaskTracker are updated only when map/reduce tasks
start/end/fail
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Key: HADOOP-1446
URL: https://issues.apache.org/jira/browse/HADOOP-1446
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.12.3
Reporter: Devaraj Das
Assignee: Devaraj Das
Fix For: 0.14.0
Metrics reporting from the TaskTracker for the maps_running and reduces_running
metrics are done only when a task is starting up or finishing up. This is wrong
and the metrics reporting should be done periodically during the life of the
TaskTracker just as it is done for the JobTracker case.
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