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Posted to issues@beam.apache.org by "Yichi Zhang (Jira)" <ji...@apache.org> on 2022/04/27 18:33:00 UTC
[jira] [Commented] (BEAM-14365) [SpannerIO.readChangeStream] The reported backlog size should not be negative
[ https://issues.apache.org/jira/browse/BEAM-14365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17528964#comment-17528964 ]
Yichi Zhang commented on BEAM-14365:
------------------------------------
[~hengfeng] can this be closed?
> [SpannerIO.readChangeStream] The reported backlog size should not be negative
> -----------------------------------------------------------------------------
>
> Key: BEAM-14365
> URL: https://issues.apache.org/jira/browse/BEAM-14365
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Affects Versions: 2.39.0
> Reporter: Hengfeng Li
> Priority: P1
> Fix For: 2.39.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> We got the following error when testing the Spanner change streams connector:
> {code:java}
> "java.lang.IllegalArgumentException: Expected size >= 0 but received -36590.86666666666. at org.apache.beam.sdk.transforms.reflect.ByteBuddyDoFnInvokerFactory$DefaultGetSize.validateSize(ByteBuddyDoFnInvokerFactory.java:438) at org.apache.beam.sdk.io.gcp.spanner.changestreams.dofn.ReadChangeStreamPartitionDoFn$DoFnInvoker.invokeGetSize(Unknown Source) at org.apache.beam.fn.harness.FnApiDoFnRunner.calculateRestrictionSize(FnApiDoFnRunner.java:1182) at org.apache.beam.fn.harness.FnApiDoFnRunner.trySplitForElementAndRestriction(FnApiDoFnRunner.java:1625) at org.apache.beam.fn.harness.FnApiDoFnRunner.access$1800(FnApiDoFnRunner.java:142) at org.apache.beam.fn.harness.FnApiDoFnRunner$SplittableFnDataReceiver.trySplit(FnApiDoFnRunner.java:1113) at org.apache.beam.fn.harness.data.PCollectionConsumerRegistry$SplittingMetricTrackingFnDataReceiver.trySplit(PCollectionConsumerRegistry.java:342) at org.apache.beam.fn.harness.BeamFnDataReadRunner.trySplit(BeamFnDataReadRunner.java:259) at org.apache.beam.fn.harness.control.ProcessBundleHandler.trySplit(ProcessBundleHandler.java:688) at org.apache.beam.fn.harness.control.BeamFnControlClient.delegateOnInstructionRequestType(BeamFnControlClient.java:151) at org.apache.beam.fn.harness.control.BeamFnControlClient$InboundObserver.lambda$onNext$0(BeamFnControlClient.java:116) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:833) " {code}
> This indicates that the return value of getSize() in SDF is negative. Since the fields in Progress cannot be negative, the negative number should come from the local throughput estimator.
>
> When this error occurs, the pipeline gets stuck and no progress is made. This prevents users from enabling autoscaling when using the SpannerIO change streams functionality.
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