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https://issues.apache.org/jira/browse/BEAM-12222?focusedWorklogId=588656&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-588656
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ASF GitHub Bot logged work on BEAM-12222:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Apr/21 02:07
Start Date: 26/Apr/21 02:07
Worklog Time Spent: 10m
Work Description: kennknowles commented on pull request #14641:
URL: https://github.com/apache/beam/pull/14641#issuecomment-826453835
Run Java Dataflow V2 ValidatesRunner
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Issue Time Tracking
-------------------
Worklog Id: (was: 588656)
Time Spent: 20m (was: 10m)
> 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: 20m
> 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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