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https://issues.apache.org/jira/browse/BEAM-12222?focusedWorklogId=589781&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-589781
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ASF GitHub Bot logged work on BEAM-12222:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Apr/21 14:40
Start Date: 27/Apr/21 14:40
Worklog Time Spent: 10m
Work Description: kennknowles commented on pull request #14641:
URL: https://github.com/apache/beam/pull/14641#issuecomment-827659785
Ah, the streaming VR tests still work because the expansion was changed and
it still matches with the ViewFn. Dataflow streaming and all the other runners
work this same way, where they work with either expansion.
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Issue Time Tracking
-------------------
Worklog Id: (was: 589781)
Time Spent: 3.5h (was: 3h 20m)
> Dataflow side input translation "Unknown producer for value"
> ------------------------------------------------------------
>
> Key: BEAM-12222
> URL: https://issues.apache.org/jira/browse/BEAM-12222
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Kenneth Knowles
> Assignee: Kenneth Knowles
> Priority: P1
> Fix For: 2.30.0
>
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> I have identified a seemingly nondeterministic issue in Dataflow translation,
> where pipelines with side inputs sometimes are translated in the wrong order.
> {code}
> java.lang.NullPointerException: Unknown producer for value
> SimplePCollectionView{tag=Tag<org.apache.beam.sdk.values.PCollectionViews$SimplePCollectionView.<init>:1221#4dca087078898728>}
> while translating step
> TfIdf.ComputeTfIdf/Combine.globally(Count)/ProduceDefault
> at
> org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:1227)
> {code}
> Seen on
> https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2_PR/32/testReport/junit/org.apache.beam.examples.complete/TfIdfIT/testE2ETfIdf/
> and also other changes. I think the change itself is just triggering the
> nondeterministic problem.
> So there is a lurking problem with side inputs overall.
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