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https://issues.apache.org/jira/browse/BEAM-9851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17147674#comment-17147674
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Maximilian Michels commented on BEAM-9851:
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[~ibzib] Wasn't there a fix for this?
> "DNS resolution failed"
> -----------------------
>
> Key: BEAM-9851
> URL: https://issues.apache.org/jira/browse/BEAM-9851
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Maximilian Michels
> Priority: P2
> Labels: stale-P2
>
> I'm seeing this one all the time, e.g.
> https://builds.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Phrase/158/console
> {noformat}
> 23:17:02 ERROR:apache_beam.runners.worker.data_plane:Failed to read inputs in
> the data plane.
> 23:17:02 Traceback (most recent call last):
> 23:17:02 File "apache_beam/runners/worker/data_plane.py", line 528, in
> _read_inputs
> 23:17:02 for elements in elements_iterator:
> 23:17:02 File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python2_PVR_Flink_Phrase/src/build/gradleenv/1866363813/local/lib/python2.7/site-packages/grpc/_channel.py",
> line 413, in next
> 23:17:02 return self._next()
> 23:17:02 File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python2_PVR_Flink_Phrase/src/build/gradleenv/1866363813/local/lib/python2.7/site-packages/grpc/_channel.py",
> line 689, in _next
> 23:17:02 raise self
> 23:17:02 _MultiThreadedRendezvous: <_MultiThreadedRendezvous of RPC that
> terminated with:
> 23:17:02 status = StatusCode.UNAVAILABLE
> 23:17:02 details = "DNS resolution failed"
> 23:17:02 debug_error_string =
> "{"created":"@1588108621.907750662","description":"Failed to pick
> subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":3981,"referenced_errors":[{"created":"@1588108621.907745000","description":"Resolver
> transient
> failure","file":"src/core/ext/filters/client_channel/resolving_lb_policy.cc","file_line":214,"referenced_errors":[{"created":"@1588108621.907743049","description":"DNS
> resolution
> failed","file":"src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc","file_line":357,"grpc_status":14,"referenced_errors":[{"created":"@1588108621.907719737","description":"C-ares
> status is not ARES_SUCCESS: Misformatted domain
> name","file":"src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc","file_line":244,"referenced_errors":[{"created":"@1588108621.907691960","description":"C-ares
> status is not ARES_SUCCESS: Misformatted domain
> name","file":"src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc","file_line":244}]}]}]}]}"
> {noformat}
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