damccorm commented on PR #36418:
URL: https://github.com/apache/beam/pull/36418#issuecomment-3387440561
Now seeing xvr failures with:
```
java.lang.RuntimeException: org.apache.beam.sdk.coders.CoderException:
`UnknownCoderWrapper` was used to perform an actual decoding in the Java SDK.
Potentially a Java transform is being followed by a cross-language transform
that uses a coder that is not available in the Java SDK. Please make sure that
Python transforms at the multi-language boundary use Beam portable coders.
at
org.apache.beam.sdk.util.construction.UnknownCoderWrapper.decode(UnknownCoderWrapper.java:55)
at org.apache.beam.sdk.coders.Coder.decode(Coder.java:159)
at
org.apache.beam.sdk.coders.LengthPrefixCoder.decode(LengthPrefixCoder.java:64)
at org.apache.beam.sdk.coders.KvCoder.decode(KvCoder.java:83)
at org.apache.beam.sdk.coders.KvCoder.decode(KvCoder.java:37)
at
org.apache.beam.sdk.values.WindowedValues$FullWindowedValueCoder.decode(WindowedValues.java:847)
at
org.apache.beam.sdk.values.WindowedValues$FullWindowedValueCoder.decode(WindowedValues.java:838)
at
org.apache.beam.sdk.values.WindowedValues$FullWindowedValueCoder.decode(WindowedValues.java:784)
at
org.apache.beam.sdk.fn.data.BeamFnDataInboundObserver.multiplexElements(BeamFnDataInboundObserver.java:232)
at
org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:527)
at
org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:150)
at
org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:115)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
org.apache.beam.sdk.util.UnboundedScheduledExecutorService$ScheduledFutureTask.run(UnboundedScheduledExecutorService.java:163)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
```
I'd seen this locally, but had thought I'd moved past it (and did get at
least one green run here). Will debug further, it seems like it could be an
issue with type inference
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