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https://issues.apache.org/jira/browse/BEAM-10322?focusedWorklogId=454289&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-454289
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ASF GitHub Bot logged work on BEAM-10322:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Jul/20 06:13
            Start Date: 03/Jul/20 06:13
    Worklog Time Spent: 10m 
      Work Description: pabloem commented on pull request #12086:
URL: https://github.com/apache/beam/pull/12086#issuecomment-653371609


   We're trying to find producer stages of a PCollection. The first stage
   encountered is the producer (due to the topological order) Subsequent
   stages encountered with subtransforms producing the PCollection are
   consumers where a Data input transform reads in the PCollection.
   
   I can go back to add the comment.
   
   On Thu, Jul 2, 2020, 5:08 PM Robert Bradshaw <[email protected]>
   wrote:
   
   > *@robertwb* commented on this pull request.
   > ------------------------------
   >
   > In sdks/python/apache_beam/runners/portability/fn_api_runner/execution.py
   > <https://github.com/apache/beam/pull/12086#discussion_r449317183>:
   >
   > > @@ -375,6 +375,8 @@ def get_all_side_inputs():
   >          for o in transform.outputs.values():
   >            if o in s.side_inputs():
   >              continue
   > +          if o in producing_stages_by_pcoll:
   >
   > Why is it OK to ignore duplicates?
   >
   > —
   > You are receiving this because you modified the open/close state.
   > Reply to this email directly, view it on GitHub
   > <https://github.com/apache/beam/pull/12086#pullrequestreview-442079350>,
   > or unsubscribe
   > 
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   > .
   >
   


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

    Worklog Id:     (was: 454289)
    Time Spent: 1h 20m  (was: 1h 10m)

> allow only single assignment to producing stages by pcollection map
> -------------------------------------------------------------------
>
>                 Key: BEAM-10322
>                 URL: https://issues.apache.org/jira/browse/BEAM-10322
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-direct
>            Reporter: Heejong Lee
>            Assignee: Heejong Lee
>            Priority: P2
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> allow only single assignment to producing stages by pcollection map



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