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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/01/02 23:21:33 UTC

[GitHub] lamber-ken commented on issue #7396: [FLINK-11250][streaming] fix thread lack when StreamTask switched from DEPLOYING to CANCELING

lamber-ken commented on issue #7396: [FLINK-11250][streaming] fix thread lack when StreamTask switched from DEPLOYING to CANCELING
URL: https://github.com/apache/flink/pull/7396#issuecomment-451015990
 
 
   Hi, @zentol, I think just lazy init streamRecordWriters will solve the bug, but the `StreamTaskCancellationBarrierTest#testEmitCancellationBarrierWhenNotReady` test failed caused the travis failure.
   So I checked what wrong. I find that because of the rework of Flink’s Network Stack from flink-1.5.0 version.
   before flink-1.5.0 version, the `CancelCheckpointMarker message` was send by `ResultPartitionWriter`
   after flink-1.5.0 version, the `CancelCheckpointMarker message` was uniformly broadcasted by `StreamRecordWriter` which inited in StreamTask's constructor.
   
   So, I need to rethink how to solve this problem, It would be nice if I could give me some advice.
   
   Best, lamber-ken

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