Jonathan Turner Eagles created MAPREDUCE-7277:
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Summary: IndexCache totalMemoryUsed differs from cache contents.
Key: MAPREDUCE-7277
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7277
Project: Hadoop Map/Reduce
Issue Type: Improvement
Reporter: Jonathan Turner Eagles
Assignee: Jonathan Turner Eagles
Attachments: IndexCacheActualSize.png
It was observed recently in a nodemanager OOM that the memory was filled with
SpillRecords. However, the IndexCache was only 15% full (1.5MB used on a 10MB
configured cache size). In particular was noted that the booking variable
totalMemoryUsed, was out of sync with the contents of the cache showing 96%
full, thereby drastically reducing the effectiveness of the cache.
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