[jira] [Commented] (BEAM-12244) Failure to connect to expansion service with GRPC local secure channel

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-12244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17431382#comment-17431382 ] 

Beam JIRA Bot commented on BEAM-12244:
--------------------------------------

This issue is P2 but has been unassigned without any comment for 60 days so it has been labeled "stale-P2". If this issue is still affecting you, we care! Please comment and remove the label. Otherwise, in 14 days the issue will be moved to P3.

Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed explanation of what these priorities mean.


> Failure to connect to expansion service with GRPC local secure channel
> ----------------------------------------------------------------------
>
>                 Key: BEAM-12244
>                 URL: https://issues.apache.org/jira/browse/BEAM-12244
>             Project: Beam
>          Issue Type: Bug
>          Components: cross-language, io-py-kafka
>            Reporter: Nir Gazit
>            Priority: P2
>              Labels: stale-P2
>          Time Spent: 5h
>  Remaining Estimate: 0h
>
> There seem to be a discrepancy between how Beam Python SDK connects to the job endpoint and the artifact endpoint (where it always uses insecure GRPC connection), and the expansion service (where it [tries to use|https://github.com/apache/beam/blob/master/sdks/python/apache_beam/transforms/external.py#L322] local secure channel if available in the GRPC module).
> This has caused an error to be thrown when trying to connect to a remote Flink cluster: 
> {code:none}
> File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/apache_beam/transforms/ptransform.py", line 573, in __ror__
>     result = p.apply(self, pvalueish, label)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/apache_beam/pipeline.py", line 689, in apply
>     pvalueish_result = self.runner.apply(transform, pvalueish, self._options)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/apache_beam/runners/runner.py", line 188, in apply
>     return m(transform, input, options)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/apache_beam/runners/runner.py", line 218, in apply_PTransform
>     return transform.expand(input)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/apache_beam/transforms/external.py", line 325, in expand
>     response = service.Expand(request)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/grpc/_channel.py", line 923, in __call__
>     return _end_unary_response_blocking(state, call, False, None)
>   File "/Users/nir.gazit/.pyenv/versions/beam/lib/python3.7/site-packages/grpc/_channel.py", line 826, in _end_unary_response_blocking
>     raise _InactiveRpcError(state)
> grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
>         status = StatusCode.UNAVAILABLE
>         details = "failed to connect to all addresses"
>         debug_error_string = "{"created":"@1619629304.651319000","description":"Failed to pick subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":5397,"referenced_errors":[{"created":"@1619629304.651278000","description":"failed to connect to all addresses","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":398,"grpc_status":14}]}"
> {code}
> I think all GRPC services (job, artifact, expansion) should use the same way to connect (currently insecure_channel)



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