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https://issues.apache.org/jira/browse/BEAM-12501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17431380#comment-17431380
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Beam JIRA Bot commented on BEAM-12501:
--------------------------------------
This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> subprocess_server.stop_process fails on Windows
> -----------------------------------------------
>
> Key: BEAM-12501
> URL: https://issues.apache.org/jira/browse/BEAM-12501
> Project: Beam
> Issue Type: Bug
> Components: cross-language, sdk-py-core
> Affects Versions: 2.30.0
> Reporter: Brian Hulette
> Priority: P3
>
> subprocess_server's stop_process method uses send_signal(signal.SIGINT) which
> is not a cross-platform way to terminate a process. We should probably use
> [terminate or
> kill|https://github.com/apache/beam/blob/acc0f76a2f3292276ae144f84c4130c504a334a1/sdks/python/apache_beam/transforms/external.py#L294]
> here instead.
> This is callled when closing the
> [context|https://github.com/apache/beam/blob/acc0f76a2f3292276ae144f84c4130c504a334a1/sdks/python/apache_beam/transforms/external.py#L294]
> in ExternalTransform. From [user@ bug
> report|https://lists.apache.org/thread.html/rd0e83292391e8d214ffca8eedae7d096b7fb463dc17971472c78c463%40%3Cuser.beam.apache.org%3E]
> {code}
> Traceback (most recent call last):
> File "beam-sql.py", line 18, in <module>
> |'sql print' >> beam.Map(print)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\pvalue.py",
> line 142, in __or__
> return self.pipeline.apply(ptransform, self)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\pipeline.py",
> line 641, in apply
> transform.transform, pvalueish, label or transform.label)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\pipeline.py",
> line 651, in apply
> return self.apply(transform, pvalueish)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\pipeline.py",
> line 694, in apply
> pvalueish_result = self.runner.apply(transform, pvalueish, self._options)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\runners\runner.py",
> line 188, in apply
> return m(transform, input, options)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\runners\runner.py",
> line 218, in apply_PTransform
> return transform.expand(input)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\transforms\external.py",
> line 304, in expand
> pipeline.local_tempdir)
> File
> "c:\users\XXX\appdata\local\programs\python\python37\lib\contextlib.py", line
> 119, in __exit__
> next(self.gen)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\transforms\external.py",
> line 351, in _service
> yield stub
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\transforms\external.py",
> line 503, in __exit__
> self._service_provider.__exit__(*args)
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\utils\subprocess_server.py",
> line 72, in __exit__
> self.stop()
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\utils\subprocess_server.py",
> line 131, in stop
> self.stop_process()
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\utils\subprocess_server.py",
> line 181, in stop_process
> return super(JavaJarServer, self).stop_process()
> File
> "C:\Users\XXX\Documents\8-Git\apache_beam\venv\lib\site-packages\apache_beam\utils\subprocess_server.py",
> line 141, in stop_process
> self._process.send_signal(signal.SIGINT)
> File
> "c:\users\XXX\appdata\local\programs\python\python37\lib\subprocess.py", line
> 1306, in send_signal
> raise ValueError("Unsupported signal: {}".format(sig))
> ValueError: Unsupported signal: 2
> {code}
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