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Posted to commits@beam.apache.org by "Thomas Weise (JIRA)" <ji...@apache.org> on 2018/08/23 22:51:00 UTC

[jira] [Updated] (BEAM-5211) Flink Streaming ExecutableStage operator chain blocks grpc receiver threads

     [ https://issues.apache.org/jira/browse/BEAM-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Weise updated BEAM-5211:
-------------------------------
    Description: The operator attempts to emit results as they are received, within the grpc thread, while the subtask thread is waiting for bundle completion. This leads to blocking of grpc threads and eventually deadlock when multiple stages are within an operator chain. Observed with wordcount, see attached stacktrace.  (was: The operator attempts to emit results as they are received, within the grpc thread, while the subtask thread is waiting for bundle completion. This leads to blocking of grpc threads and eventually deadlock when multiple stages are within an operator chain. See attached stacktrace.)

> Flink Streaming ExecutableStage operator chain blocks grpc receiver threads 
> ----------------------------------------------------------------------------
>
>                 Key: BEAM-5211
>                 URL: https://issues.apache.org/jira/browse/BEAM-5211
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-flink
>    Affects Versions: 2.6.0
>            Reporter: Thomas Weise
>            Assignee: Thomas Weise
>            Priority: Major
>              Labels: portability
>             Fix For: 2.7.0
>
>
> The operator attempts to emit results as they are received, within the grpc thread, while the subtask thread is waiting for bundle completion. This leads to blocking of grpc threads and eventually deadlock when multiple stages are within an operator chain. Observed with wordcount, see attached stacktrace.



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