Details
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Improvement
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Status: Resolved
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Major
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Resolution: Duplicate
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Description
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 also record the average value and the max value instead of only the last snapshot value, it could be much helpful.
If you think it' ok. I will contribute the code.