[jira] [Created] (BEAM-8646) PR # appears to introduce nondeterministic behavior in fnapi_runner tests

["Valentyn Tymofieiev (Jira)" <ji...@apache.org>]

Valentyn Tymofieiev created BEAM-8646:
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             Summary: PR # appears to introduce nondeterministic behavior in fnapi_runner tests
                 Key: BEAM-8646
                 URL: https://issues.apache.org/jira/browse/BEAM-8646
             Project: Beam
          Issue Type: Bug
          Components: sdk-py-core
            Reporter: Valentyn Tymofieiev


It appears that changes in 
 https://github.com/apache/beam/commit/d6bcb03f586b5430c30f6ca4a1af9e42711e529c cause test failures in Beam test suite on Windows, for example:

python setup.py nosetests --tests apache_beam/runners/portability/portable_runner_test.py:PortableRunnerTestWithExternalEnv.test_callbacks_with_exception 

does not finish on a Windows VM machine within at least 60 seconds but passes within a second if  we change host_from_worker to return 'localhost'  in [1].

 [~violalyu] , do you think you could take a look? Thanks! 
cc: [~chadrik] [~tweise]

[1] https://github.com/apache/beam/blob/808cb35018cd228a59b152234b655948da2455fa/sdks/python/apache_beam/runners/portability/fn_api_runner.py#L1377. 

I was able to reproduce the same beg 



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