Yingjie Cao created FLINK-20740:
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Summary: Use managed memory to avoid direct memory OOM error
Key: FLINK-20740
URL: https://issues.apache.org/jira/browse/FLINK-20740
Project: Flink
Issue Type: Bug
Components: Runtime / Network
Affects Versions: 1.12.0
Reporter: Yingjie Cao
Fix For: 1.13.0
Currently, sort-merge blocking shuffle uses some unmanaged memory for data
writing and reading, which means users must increase the size of direct memory,
otherwise, one may encounter direct memory OOM error, which is really bad for
usability.
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