jaketf opened a new pull request #11596: URL: https://github.com/apache/beam/pull/11596
This PR is an experiment to illustrate a potential strategy for implementing HL7v2IO.ListMessages as a splittable DoFn that carves the sendTime dimension up into time ranges and uses the Messages.List API. ## DISCLAIMER This PR is currently a discussion piece to help drive the decision of the future of HL7v2IO.ListMessages. It has excessive logging for demonstrating behavior / debugging and is currently broken. CC: @pabloem ## Questions - What are the prototypical tests for validating splitable DoFn's various methods (e.g. SplitRestriction) stability? ## Current Status: Broken Currently get confusing NPE with OffsetRangeTracker when running `./gradlew :sdks:java:io:google-cloud-platform:integrationTest --tests "org.apache.beam.sdk.io.gcp.healthcare.HL7v2IOReadIT.testHL7v2IO_ListHL7v2Messages_filtered"` I seem to get the expected initial daily splits: ``` WARNING: splitting initial sendTime restriction of [minSendTime, now): [2019-03-09T13:24:44.000Z,2020-05-02T02:18:51.850Z), or [1552137884000, 1588385931850). total days: 419 into 420 splits. Last split: [1588339484000, 1588385931850) ``` NPE Error: ``` java.lang.NullPointerException org.apache.beam.sdk.Pipeline$PipelineExecutionException: java.lang.NullPointerException at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish(DirectRunner.java:348) at org.apache.beam.runners.direct.DirectRunner$DirectPipelineResult.waitUntilFinish(DirectRunner.java:318) at org.apache.beam.runners.direct.DirectRunner.run(DirectRunner.java:213) at org.apache.beam.runners.direct.DirectRunner.run(DirectRunner.java:67) at org.apache.beam.sdk.Pipeline.run(Pipeline.java:317) at org.apache.beam.sdk.Pipeline.run(Pipeline.java:303) at org.apache.beam.sdk.io.gcp.healthcare.HL7v2IOReadIT.testHL7v2IO_ListHL7v2Messages_filtered(HL7v2IOReadIT.java:135) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.apache.beam.sdk.testing.TestPipeline$1.evaluate(TestPipeline.java:319) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305) at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:365) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63) at org.junit.runners.ParentRunner$4.run(ParentRunner.java:330) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:78) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:328) at org.junit.runners.ParentRunner.access$100(ParentRunner.java:65) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305) at org.junit.runners.ParentRunner.run(ParentRunner.java:412) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38) at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93) at com.sun.proxy.$Proxy2.processTestClass(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:118) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:175) at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:157) at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at org.apache.beam.sdk.transforms.splittabledofn.OffsetRangeTracker.checkDone(OffsetRangeTracker.java:98) at org.apache.beam.repackaged.direct_java.sdk.fn.splittabledofn.RestrictionTrackers$RestrictionTrackerObserver.checkDone(RestrictionTrackers.java:77) at org.apache.beam.repackaged.direct_java.runners.core.OutputAndTimeBoundedSplittableProcessElementInvoker.invokeProcessElement(OutputAndTimeBoundedSplittableProcessElementInvoker.java:234) at org.apache.beam.repackaged.direct_java.runners.core.SplittableParDoViaKeyedWorkItems$ProcessFn.processElement(SplittableParDoViaKeyedWorkItems.java:524) ``` - [ ] [**Choose reviewer(s)**](https://beam.apache.org/contribute/#make-your-change) and mention them in a comment (`R: @username`). - [x] Format the pull request title like `[BEAM-XXX] Fixes bug in ApproximateQuantiles`, where you replace `BEAM-XXX` with the appropriate JIRA issue, if applicable. This will automatically link the pull request to the issue. - [x] Update `CHANGES.md` with noteworthy changes. - [x] If this contribution is large, please file an Apache [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.pdf). See the [Contributor Guide](https://beam.apache.org/contribute) for more tips on [how to make review process smoother](https://beam.apache.org/contribute/#make-reviewers-job-easier). 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