[GitHub] lamber-ken opened a new pull request #7396: [FLINK-11250] fix thread lack when StreamTask switched from DEPLOYING to CANCELING

[GitBox <gi...@apache.org>]

lamber-ken opened a new pull request #7396: [FLINK-11250] fix thread lack when StreamTask switched from DEPLOYING to CANCELING
URL: https://github.com/apache/flink/pull/7396
 
 
   ## What is the purpose of the change
   
   begin flink-1.5.x version, streamRecordWriters was created in StreamTask's constructor, which start OutputFlusher daemon thread. so when task switched from DEPLOYING to CANCELING state, the daemon thread will be lacked.
   
   ## Brief change log
   
   lazy init streamRecordWriters, streamRecordWriters are created in invoke method
   
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no)
     - The serializers: (no)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes)
     - The S3 file system connector: (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (no)
     - If yes, how is the feature documented? (not documented)
   

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