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https://issues.apache.org/jira/browse/BEAM-5184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16587259#comment-16587259
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Vaclav Plajt edited comment on BEAM-5184 at 8/23/18 7:12 AM:
-------------------------------------------------------------

PR: [https://github.com/apache/beam/pull/6257]


was (Author: vaclav.plajt):
MR: https://github.com/apache/beam/pull/6257

> Multimap side inputs with duplicate keys and values are being lost
> ------------------------------------------------------------------
>
>                 Key: BEAM-5184
>                 URL: https://issues.apache.org/jira/browse/BEAM-5184
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>            Reporter: Luke Cwik
>            Assignee: Vaclav Plajt
>            Priority: Major
>          Time Spent: 3h 50m
>  Remaining Estimate: 0h
>
> Side inputs with duplicate values are being lost due to the usage of a set 
> based multimap.
> [https://github.com/apache/beam/blob/05fb694f265dda0254d7256e938e508fec9ba098/sdks/java/core/src/main/java/org/apache/beam/sdk/values/PCollectionViews.java#L293]
>  
> Originating thread: 
> [https://lists.apache.org/thread.html/48bae7cf71bf6851622cdee0e8bc8619c79c4c2273ed63f288202169@%3Cdev.beam.apache.org%3E]
>  
> Please update the existing tests to exercise this scenario as well: 
> https://github.com/apache/beam/blob/9f23ffc97535e7255245f3852b9d2f0939df5a0a/sdks/java/core/src/test/java/org/apache/beam/sdk/transforms/ViewTest.java#L507



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