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https://issues.apache.org/jira/browse/BEAM-6666?focusedWorklogId=205468&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-205468
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ASF GitHub Bot logged work on BEAM-6666:
----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Feb/19 23:18
Start Date: 27/Feb/19 23:18
Worklog Time Spent: 10m
Work Description: ihji commented on issue #7845: [BEAM-6666]
subprocess.Popen hangs after use of gRPC channel
URL: https://github.com/apache/beam/pull/7845#issuecomment-468070139
retest this please
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Issue Time Tracking
-------------------
Worklog Id: (was: 205468)
Time Spent: 1.5h (was: 1h 20m)
> subprocess.Popen hangs after use of gRPC channel
> ------------------------------------------------
>
> Key: BEAM-6666
> URL: https://issues.apache.org/jira/browse/BEAM-6666
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Heejong Lee
> Assignee: Heejong Lee
> Priority: Major
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> subprocess.Popen randomly hangs after use of gRPC channel. This makes
> cross-language wordcount test fail because the test uses Popen to launch
> Dockerized Flink job server in `PortableRunner.run_pipeline` after use of
> gRPC channel for the expansion service in `ExternalTransform.expand`. Few
> symptoms are listed below:
> * Hanging at `docker_path = check_output(['which', 'docker']).strip()`
> * Hanging at `self.docker_process = Popen(cmd)`
> * Crashing with `assertion failed: pthread_mutex_lock(mu) == 0` message
>
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