[ 
https://issues.apache.org/jira/browse/BEAM-11812?focusedWorklogId=554535&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-554535
 ]

ASF GitHub Bot logged work on BEAM-11812:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 19/Feb/21 00:44
            Start Date: 19/Feb/21 00:44
    Worklog Time Spent: 10m 
      Work Description: robertwb commented on a change in pull request #13998:
URL: https://github.com/apache/beam/pull/13998#discussion_r578847151



##########
File path: 
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/windowing/InvalidWindows.java
##########
@@ -87,4 +87,9 @@ public void verifyCompatibility(WindowFn<?, ?> other) throws 
IncompatibleWindowE
   public Instant getOutputTime(Instant inputTimestamp, W window) {
     return inputTimestamp;
   }
+
+  @Override
+  public boolean isNonMerging() {

Review comment:
       +1




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 554535)
    Time Spent: 1h 20m  (was: 1h 10m)

> PostCommit Java VR ULR Failing
> ------------------------------
>
>                 Key: BEAM-11812
>                 URL: https://issues.apache.org/jira/browse/BEAM-11812
>             Project: Beam
>          Issue Type: Bug
>          Components: test-failures
>            Reporter: Brian Hulette
>            Assignee: Yichi Zhang
>            Priority: P1
>              Labels: currently-failing
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> First failure: 
> https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/534/
> Failing 
> org.apache.beam.sdk.transforms.ReshuffleTest.testReshuffleAfterSessionsAndGroupByKey
> {code}
> java.lang.RuntimeException: The Runner experienced the following error during 
> execution:
> Traceback (most recent call last):
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/local_job_service.py",
>  line 275, in _run_job
>     result = fn_runner.FnApiRunner(
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 193, in run_via_runner_api
>     return self.run_stages(stage_context, stages)
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 356, in run_stages
>     stage_results = self._run_stage(
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 547, in _run_stage
>     last_result, deferred_inputs, fired_timers = self._run_bundle(
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 593, in _run_bundle
>     result, splits = bundle_manager.process_bundle(
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 886, in process_bundle
>     self._send_input_to_worker(process_bundle_id, transform_id, elements)
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/fn_runner.py",
>  line 762, in _send_input_to_worker
>     for byte_stream in byte_streams:
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/execution.py",
>  line 254, in __iter__
>     return itertools.chain(*self.partition(1))
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/execution.py",
>  line 240, in partition
>     for wkvs in windowed_key_values(key, windowed_values):
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/transforms/trigger.py",
>  line 1126, in process_entire_key
>     for wvalue in self.process_elements(state,
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/transforms/trigger.py",
>  line 1308, in process_elements
>     self.window_fn.merge(TriggerMergeContext(all_windows))
>   File 
> "/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Java_ValidatesRunner_ULR/src/sdks/python/apache_beam/runners/portability/fn_api_runner/execution.py",
>  line 423, in merge
>     raise RuntimeError(result.error)
> RuntimeError: java.lang.UnsupportedOperationException
>       at 
> org.apache.beam.sdk.transforms.windowing.InvalidWindows.mergeWindows(InvalidWindows.java:55)
>       at 
> org.apache.beam.fn.harness.WindowMergingFnRunner$MergingViaWindowFnRunner.mergeWindows(WindowMergingFnRunner.java:153)
>       at 
> org.apache.beam.fn.harness.MapFnRunners$CompressedValueOnlyMapperFactory.lambda$create$0(MapFnRunners.java:187)
>       at 
> org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:222)
>       at 
> org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$MetricTrackingFnDataReceiver.accept(PCollectionConsumerRegistry.java:185)
>       at 
> org.apache.beam.fn.harness.BeamFnDataReadRunner.forwardElementToConsumer(BeamFnDataReadRunner.java:220)
>       at 
> org.apache.beam.sdk.fn.data.DecodingFnDataReceiver.accept(DecodingFnDataReceiver.java:43)
>       at 
> org.apache.beam.sdk.fn.data.DecodingFnDataReceiver.accept(DecodingFnDataReceiver.java:25)
>       at 
> org.apache.beam.fn.harness.data.QueueingBeamFnDataClient.drainAndBlock(QueueingBeamFnDataClient.java:111)
>       at 
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:308)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:173)
>       at 
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:157)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> {code}



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