Cindy Li created MAPREDUCE-4710:
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Summary: Add peak memory usage counter for each task
Key: MAPREDUCE-4710
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4710
Project: Hadoop Map/Reduce
Issue Type: New Feature
Components: task
Affects Versions: 1.0.2
Reporter: Cindy Li
Priority: Minor
Each task has counters PHYSICAL_MEMORY_BYTES and VIRTUAL_MEMORY_BYTES, which
are snapshots of memory usage of that task. They are not sufficient for users
to understand peak memory usage by that task, e.g. in order to diagnose task
failures, tune job parameters or change application design. This new feature
will add two more counters for each task: PHYSICAL_MEMORY_BYTES_MAX and
VIRTUAL_MEMORY_BYTES_MAX.
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