Weijie Guo created FLINK-28800:
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Summary: HsFileDataManager should avoid busy-loop when fileReader
has not data to read
Key: FLINK-28800
URL: https://issues.apache.org/jira/browse/FLINK-28800
Project: Flink
Issue Type: Bug
Components: Runtime / Network
Reporter: Weijie Guo
When fileReader has no data to read, for example, most of data is consumed from
memory. HsFileDataManager will encounter busy-loop problem, which will lead to
a meaningless surge in CPU utilization and seriously affect performance.
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