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Posted to dev@flink.apache.org by "Weijie Guo (Jira)" <ji...@apache.org> on 2022/08/09 07:37:00 UTC

[jira] [Created] (FLINK-28884) HsSubpartitionView should be initialized to a notifiable state.

Weijie Guo created FLINK-28884:
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             Summary: HsSubpartitionView should be initialized to a notifiable state.
                 Key: FLINK-28884
                 URL: https://issues.apache.org/jira/browse/FLINK-28884
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network
            Reporter: Weijie Guo
             Fix For: 1.16.0


HsSubpartitionView should be initialized to a notifiable state, there may be a problem of never consuming otherwise.

Imagine the following situation: Downstream task has no initial credit(i.e. exclusive buffers is config to zero), if there is no data output in the upstream, it will feedback a zero backlog to downstream input channel. All subsequent data available notifications will be intercepted as needNotify is false.



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