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[FLINK-17182][network] Fix the unstable input channel test by recycling exclusive and floating buffer in the same thread #11924

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merged 1 commit into from Jun 12, 2020

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gaoyunhaii
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What is the purpose of the change

This PR fixes the unstable input channel test.

Currently some test might be unstable with specific thread concurrency when we simulating the cases that recycling exclusive and floating buffers in different threads. However, in realistic there should be no such cases. Therefore, we could change the recycling into the same thread.

Brief change log

  • c9d0fc6 fixes the unstable tests.

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

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, Kubernetes/Yarn/Mesos, ZooKeeper: no
  • The S3 file system connector: no

Documentation

  • Does this pull request introduce a new feature? no
  • If yes, how is the feature documented? not applicable

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Thanks for the fix @gaoyunhaii !

LGTM! Before merging we should resolve the conflicts now.

…ng exclusive and floating buffer in the same thread
@gaoyunhaii gaoyunhaii force-pushed the formal_fix_input_channel_test branch from e9ef0b9 to 79d4c84 Compare June 11, 2020 16:49
@zhijiangW zhijiangW merged commit f88d98d into apache:master Jun 12, 2020
zhijiangW pushed a commit that referenced this pull request Jun 12, 2020
….testConcurrentOnSenderBacklogAndRecycle

In this unstable unit test, the exclusive buffers and floating buffers are recycled by different
threads, which might cause unexpected race condition issue. But actually they should always be
recycled by the same task thread in practice. So we refactor the test process to recycle them in
the same thread to avoid potential unnecessary issues.
    
This closes #11924.
zhangjun0x01 pushed a commit to zhangjun0x01/flink that referenced this pull request Jul 8, 2020
….testConcurrentOnSenderBacklogAndRecycle

In this unstable unit test, the exclusive buffers and floating buffers are recycled by different
threads, which might cause unexpected race condition issue. But actually they should always be
recycled by the same task thread in practice. So we refactor the test process to recycle them in
the same thread to avoid potential unnecessary issues.
    
This closes apache#11924.
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