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Posted to dev@flink.apache.org by "AlexHu (Jira)" <ji...@apache.org> on 2022/11/08 04:04:00 UTC

[jira] [Created] (FLINK-29923) Hybrid Shuffle may face deadlock when running a task need to execute big size data

AlexHu created FLINK-29923:
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             Summary: Hybrid Shuffle may face deadlock when running a task need to execute big size data
                 Key: FLINK-29923
                 URL: https://issues.apache.org/jira/browse/FLINK-29923
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network
    Affects Versions: 1.11.6
            Reporter: AlexHu
         Attachments: 性能差距.png, 死锁2-select.png, 死锁检测.png

The flink 1.11.6 offers hybrid shuffle to combine the superiority of blocking shuffle and pipeline shuffle. But when I want to test this new feature I face a problem that it may cause deadlock when it running. 

Actually, it will run well at beginning. However, when it runs to a certain number it may failure for the buffer size and if I set a bigger size it may running without data execution like the picture. So I want to ask the cause of this problem and a solution.



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