Yingjie Cao created FLINK-20758:
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Summary: Use region file mechanism for shuffle data reading before
we switch to managed memory
Key: FLINK-20758
URL: https://issues.apache.org/jira/browse/FLINK-20758
Project: Flink
Issue Type: Sub-task
Components: Runtime / Network
Affects Versions: 1.12.0
Reporter: Yingjie Cao
Fix For: 1.12.2
FLINK-15981 implemented region file based data reader to solve the direct
memory OOM issue introduced by usage of unmanaged direct memory, however only
for BoundedBlockingResultPartition. We can introduce it to sort-merge based
blocking shuffle to avoid the similar direct memory OOM problem which can
improve the usability a lot.
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