[jira] [Commented] (BEAM-11005) Can't use side inputs with Combine.PerKeyWithHotKeyFanout

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-11005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17277324#comment-17277324 ] 

Beam JIRA Bot commented on BEAM-11005:
--------------------------------------

This issue was marked "stale-P2" and has not received a public comment in 14 days. It is now automatically moved to P3. If you are still affected by it, you can comment and move it back to P2.

> Can't use side inputs with Combine.PerKeyWithHotKeyFanout
> ---------------------------------------------------------
>
>                 Key: BEAM-11005
>                 URL: https://issues.apache.org/jira/browse/BEAM-11005
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>            Reporter: Mia Gil Epner
>            Priority: P3
>              Labels: Clarified
>
> PerKeyWithHotKeyFanout doesn't allow a user to specify a side input and access it in the CombineFn. When the function `withHotKeyFanout` is called, any sideinputs stored in the Combine.PerKey are dropped. ([https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/Combine.java#L1571]): 
> {code:java}
>     public PerKeyWithHotKeyFanout<K, InputT, OutputT> withHotKeyFanout(
>         SerializableFunction<? super K, Integer> hotKeyFanout) {
>       return new PerKeyWithHotKeyFanout<>(fn, fnDisplayData, hotKeyFanout);
>     }
> {code}
> We would like to be able to use side inputs and hot key fanout.



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