This was already reported in BEAM-6512 [1], which Scott gave me as a starter bug. I haven't been able to reproduce locally, so I'm trying to see if I can get it to fail on Jenkins again with some additional logging [2].
Definitely interested in other's thoughts on this, I only vaguely understand what's going on. So far the only headway I've made is noticing that the "CANCELLED: Multiplexer hanging up" error seems to always occur exactly three times in failing tests. Successful runs may have one or two of these messages but never three. [1] https://issues.apache.org/jira/browse/BEAM-6512 [2] https://github.com/apache/beam/pull/7767 On Tue, Feb 5, 2019 at 9:50 AM Alex Amato <ajam...@google.com> wrote: > > org.apache.beam.runners.fnexecution.data.GrpcDataServiceTest.testMessageReceivedBySingleClientWhenThereAreMultipleClients > > I keep seeing this test failing in my PRs > > https://builds.apache.org/job/beam_PreCommit_Java_Commit/4018/ > > > https://builds.apache.org/job/beam_PreCommit_Java_Commit/4018/testReport/junit/org.apache.beam.runners.fnexecution.data/GrpcDataServiceTest/testMessageReceivedBySingleClientWhenThereAreMultipleClients/ > > > I've seen this one come and go for a few weeks or so. I am unsure exactly > when it first occured. >
