Lantao Jin created MAPREDUCE-7025:
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Summary: Avg and Max of memory could be record in TaskCount
Key: MAPREDUCE-7025
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7025
Project: Hadoop Map/Reduce
Issue Type: Improvement
Reporter: Lantao Jin
Assignee: Lantao Jin
MapReduce Counter is very helpful tool to do statistics, analysis and tuning in
industry. One popular way is analysing job historical status of running to
optimise continuously. But when the job completed, the memory usage in counter
is a snapshot value {{PHYSICAL_MEMORY_BYTES}}. So if we can record the average
value and the max value instead of the last snapshot value, it could be much
helpful.
If you think it' ok. I will contribute the code.
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