chamikaramj commented on issue #22533:
URL: https://github.com/apache/beam/issues/22533#issuecomment-1199954401

   I can reproduce this locally. With grpcio 1.48.0 the "subprocess.Popen" 
invocation below gets stuck.
   
   
https://github.com/apache/beam/blob/e5e3cb25ca4fc2e31c10eb3dbda8289c6bfc7140/sdks/python/apache_beam/utils/subprocess_server.py#L117
   
   cmd is: ['java' '-jar' 
'<path>/beam/sdks/java/io/expansion-service/build/libs/beam-sdks-java-io-expansion-service-2.42.0-SNAPSHOT.jar'
 '55010' 
'--filesToStage=<path>/beam/sdks/java/io/expansion-service/build/libs/beam-sdks-java-io-expansion-service-2.42.0-SNAPSHOT.jar']
   
   It works fine with grpcio 1.47.0.
   
   @tvalentyn any idea how to proceed here ? Sounds to me like a bug in new 
grpcio. Should we try to pin the version ?
   (that will still break old SDKs though).


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