[jira] [Work logged] (BEAM-11784) Java pipeline proto serialization does not ensure topological ordering of root transforms

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-11784?focusedWorklogId=550435&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-550435 ]

ASF GitHub Bot logged work on BEAM-11784:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Feb/21 21:50
            Start Date: 09/Feb/21 21:50
    Worklog Time Spent: 10m 
      Work Description: kennknowles commented on pull request #13942:
URL: https://github.com/apache/beam/pull/13942#issuecomment-776266990


   R: @chamikaramj @robertwb 


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 550435)
    Time Spent: 20m  (was: 10m)

> Java pipeline proto serialization does not ensure topological ordering of root transforms
> -----------------------------------------------------------------------------------------
>
>                 Key: BEAM-11784
>                 URL: https://issues.apache.org/jira/browse/BEAM-11784
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>            Priority: P1
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Seen these root orders when running {{ImpulseTest.testImpulse}}:
>  - {{["Impulse", "PAssert$0", "FlatMapElements"]}}
>  - {{["FlatMapElements", "PAssert$0", "Impulse"]}}
> Pipeline is:
> {code}
> PCollection<Integer> result =
>         p.apply(Impulse.create())
>             .apply(
>                 FlatMapElements.into(TypeDescriptors.integers())
>                     .via(impulse -> Arrays.asList(1, 2, 3)));
>     PAssert.that(result).containsInAnyOrder(1, 2, 3);
> {code}
> The topological order is linear and is neither of the above.



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