You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@flink.apache.org by "Weijie Guo (Jira)" <ji...@apache.org> on 2022/08/03 06:41:00 UTC

[jira] [Created] (FLINK-28785) Hybrid shuffle consumer thread and upstream thread may have dead lock

Weijie Guo created FLINK-28785:
----------------------------------

             Summary: Hybrid shuffle consumer thread and upstream thread may have dead lock 
                 Key: FLINK-28785
                 URL: https://issues.apache.org/jira/browse/FLINK-28785
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network
            Reporter: Weijie Guo
             Fix For: 1.16.0


In hybrid shuffle mode, subpartition view lock will be acquired by consumer thread, and further acquire the read lock of MemoryDataManager. But MemoryDataManager may acquire write lock to  make a global spilling decision, and then wait subpartition view lock to get consuming offset. In this case, deadlock will occurs.

consumer thread : acqurie subpartition lock -> wait read lock.

upstream thread: acquire write lock -> wait subpartition lock.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)