Collect information about number of tasks succeeded / total per time unit for a
tasktracker.
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Key: HADOOP-5931
URL: https://issues.apache.org/jira/browse/HADOOP-5931
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Hemanth Yamijala
Collecting information of number of tasks succeeded / total per tasktracker and
being able to see these counts per hour, day and since start time will help
reason about things like the blacklisting strategy.
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