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Posted to dev@flink.apache.org by "Piotr Nowojski (Jira)" <ji...@apache.org> on 2021/09/07 09:05:00 UTC

[jira] [Created] (FLINK-24184) Potential race condition leading to incorrectly issued interruptions

Piotr Nowojski created FLINK-24184:
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             Summary: Potential race condition leading to incorrectly issued interruptions
                 Key: FLINK-24184
                 URL: https://issues.apache.org/jira/browse/FLINK-24184
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Task
    Affects Versions: 1.13.2, 1.12.5, 1.11.4, 1.10.3, 1.9.3, 1.8.3, 1.14.0
            Reporter: Piotr Nowojski
             Fix For: 1.15.0


There is a  race condition in disabling interrupts while closing resources. Currently this is guarded by a volatile variable, but there might be a race condition when:
1. interrupter thread first checked the shouldInterruptOnCancel flag
2. shouldInterruptOnCancel flag switched to false as Task/StreamTask entered cleaning up phase
3. interrupter issued an interrupt while Task/StreamTask are closing/releasing resources, potentially causing a memory leak



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