yucai created SPARK-22540:
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Summary: HighlyCompressedMapStatus's avgSize is incorrect
Key: SPARK-22540
URL: https://issues.apache.org/jira/browse/SPARK-22540
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.3.0
Reporter: yucai
The calculation of HighlyCompressedMapStatus's avgSize is incorrect.
Currently, it looks like "sum of small blocks / count of all non empty blocks",
all non empty blocks contains huge blocks number also, actually we need the
count of small blocks only.
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