zhoukang created SPARK-21956:
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Summary: Fetch up to max bytes when buf really released
Key: SPARK-21956
URL: https://issues.apache.org/jira/browse/SPARK-21956
Project: Spark
Issue Type: Improvement
Components: Shuffle, Spark Core
Affects Versions: 2.1.0
Reporter: zhoukang
Right now,ShuffleBlockFetcherIterator will decrease bytesInFlight immediatily
when take from results queue.But currentresult's bytebuf has not been released
at that time.Then direct memory may be a little out of control.
We should decrease bytesInFlight when currentresult's bytebuf really been
released.
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