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https://issues.apache.org/jira/browse/BEAM-4826?focusedWorklogId=134282&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-134282
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ASF GitHub Bot logged work on BEAM-4826:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 13/Aug/18 20:18
            Start Date: 13/Aug/18 20:18
    Worklog Time Spent: 10m 
      Work Description: angoenka commented on issue #6132: [BEAM-4826] Sanitize 
pCollections before sending to SDKHarness
URL: https://github.com/apache/beam/pull/6132#issuecomment-412649268
 
 
   Ping for review.

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

    Worklog Id:     (was: 134282)
    Time Spent: 1h  (was: 50m)

> Flink runner sends bad flatten to SDK
> -------------------------------------
>
>                 Key: BEAM-4826
>                 URL: https://issues.apache.org/jira/browse/BEAM-4826
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-flink
>            Reporter: Henning Rohde
>            Assignee: Ankur Goenka
>            Priority: Major
>              Labels: portability
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> For a Go flatten test w/ 3 input, the Flink runner splits this into 3 bundle 
> descriptors. But it sends the original 3-input flatten but w/ 1 actual input 
> present in each bundle descriptor. This is inconsistent and the SDK shouldn't 
> expect dangling PCollections. In contrast, Dataflow removes the flatten when 
> it does the same split.
> Snippet:
> register: <
>   process_bundle_descriptor: <
>     id: "3"
>     transforms: <
>       key: "e4"
>       value: <
>         unique_name: "github.com/apache/beam/sdks/go/pkg/beam.createFn'1"
>         spec: <
>           urn: "urn:beam:transform:pardo:v1"
>           payload: [...]
>         >
>         inputs: <
>           key: "i0"
>           value: "n3"
>         >
>         outputs: <
>           key: "i0"
>           value: "n4"
>         >
>       >
>     >
>     transforms: <
>       key: "e7"
>       value: <
>         unique_name: "Flatten"
>         spec: <
>           urn: "beam:transform:flatten:v1"
>         >
>         inputs: <
>           key: "i0"
>           value: "n2"
>         >
>         inputs: <
>           key: "i1"
>           value: "n4" . // <----------- only one present.
>         >
>         inputs: <
>           key: "i2"
>           value: "n6"
>         >
>         outputs: <
>           key: "i0"
>           value: "n7"
>         >
>       >
>     >
> [...]



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