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https://issues.apache.org/jira/browse/BEAM-10539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17548820#comment-17548820
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Danny McCormick commented on BEAM-10539:
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This issue has been migrated to https://github.com/apache/beam/issues/20435
> Java SDK Harness throws IllegalStateException with user states in finishBundle
> ------------------------------------------------------------------------------
>
> Key: BEAM-10539
> URL: https://issues.apache.org/jira/browse/BEAM-10539
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-harness
> Reporter: Yichi Zhang
> Priority: P3
> Labels: Clarified
>
> {code:java}
> Error message from worker: java.lang.IllegalStateException:
> java.lang.IllegalStateException: Attempt to register more than 65535 parties
> for java.util.concurrent.Phaser@16e4ff69[phase = 0 parties = 65535 arrived =
> 0]
>
> org.apache.beam.fn.harness.state.FnApiStateAccessor.finalizeState(FnApiStateAccessor.java:498)
>
> org.apache.beam.fn.harness.FnApiDoFnRunner.finishBundle(FnApiDoFnRunner.java:1204)
>
> org.apache.beam.fn.harness.data.PTransformFunctionRegistry.lambda$register$0(PTransformFunctionRegistry.java:108)
>
> org.apache.beam.fn.harness.control.ProcessBundleHandler.processBundle(ProcessBundleHandler.java:302)
>
> org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:173)
>
> org.apache.beam.fn.harness.control.BeamFnControlClient.lambda$processInstructionRequests$0(BeamFnControlClient.java:157)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.IllegalStateException: Attempt to register more than
> 65535 parties for java.util.concurrent.Phaser@16e4ff69[phase = 0 parties =
> 65535 arrived = 0]
> java.util.concurrent.Phaser.doRegister(Phaser.java:438)
> java.util.concurrent.Phaser.register(Phaser.java:591)
>
> org.apache.beam.fn.harness.control.ProcessBundleHandler$BlockTillStateCallsFinish.handle(ProcessBundleHandler.java:712)
>
> org.apache.beam.fn.harness.state.BagUserState.asyncClose(BagUserState.java:123)
>
> org.apache.beam.fn.harness.state.FnApiStateAccessor.finalizeState(FnApiStateAccessor.java:492)
> ... 8 more
> {code}
> This is probably caused by concurrently accessing too many states (too many
> state keys).
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