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https://issues.apache.org/jira/browse/BEAM-4689?focusedWorklogId=117916&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-117916
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ASF GitHub Bot logged work on BEAM-4689:
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Author: ASF GitHub Bot
Created on: 30/Jun/18 21:25
Start Date: 30/Jun/18 21:25
Worklog Time Spent: 10m
Work Description: kennknowles commented on issue #5834: [BEAM-4689]
Reverts change of SDF key type
URL: https://github.com/apache/beam/pull/5834#issuecomment-401567193
Curiously enough `:beam-examples-java-compileJava` at the same lastest
`master` reliably fails on my workstation and reliably succeeds on my laptop.
Not a clue why. I'm still going to revert the changes that seem like they don't
make sense here.
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Issue Time Tracking
-------------------
Worklog Id: (was: 117916)
Time Spent: 2h 20m (was: 2h 10m)
> Dataflow cannot deserialize SplittableParDo DoFns
> -------------------------------------------------
>
> Key: BEAM-4689
> URL: https://issues.apache.org/jira/browse/BEAM-4689
> Project: Beam
> Issue Type: New Feature
> Components: runner-dataflow
> Reporter: Kenneth Knowles
> Assignee: Eugene Kirpichov
> Priority: Blocker
> Fix For: 2.6.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> The Dataflow postcommit is broken in a way that seems real and user-impacting:
> https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Gradle/lastCompletedBuild/testReport/junit/org.apache.beam.sdk.transforms/SplittableDoFnTest/testSideInput/
> {code}
> Caused by: java.lang.IllegalArgumentException: unable to deserialize
> Serialized DoFnInfo
> ...
> Caused by: java.io.InvalidClassException:
> org.apache.beam.runners.core.construction.SplittableParDo$RandomUniqueKeyFn;
> local class incompatible: stream classdesc serialVersionUID =
> 6068396661487412884, local class serialVersionUID = -617521663543732196
> {code}
> This means that the worker is using a version of the class from its own
> classpath, not the version from the user's staged pipeline. It implies that
> the worker is not shading runners-core-construction. Because that is where a
> ton of utility DoFns live, it is critical that it be shaded.
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