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Posted to commits@beam.apache.org by "Batkhuyag Batsaikhan (JIRA)" <ji...@apache.org> on 2018/05/08 01:28:00 UTC

[jira] [Created] (BEAM-4255) GloballyAsSingletonView is writing multiple values to the SingletonView

Batkhuyag Batsaikhan created BEAM-4255:
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             Summary: GloballyAsSingletonView is writing multiple values to the SingletonView
                 Key: BEAM-4255
                 URL: https://issues.apache.org/jira/browse/BEAM-4255
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-core
    Affects Versions: 2.4.0
            Reporter: Batkhuyag Batsaikhan
            Assignee: Batkhuyag Batsaikhan
             Fix For: 3.0.0


The code snippet below is writing multiple values to the sideInput. Resulting in exception: "PCollection with more than one element accessed as a singleton view."

PCollectionView<Integer> globalView = input
 .apply(Window.<Integer>into(new GlobalWindows())
    .triggering(Repeatedly.forever(AfterPane.elementCountAtLeast(1)))
    .accumulatingFiredPanes())
 .apply(Sum.integersGlobally().asSingletonView())

 

 



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