[jira] [Comment Edited] (KAFKA-3839) Handling null keys in KTable.groupBy

["Guozhang Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-3839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15337172#comment-15337172 ] 

Guozhang Wang edited comment on KAFKA-3839 at 6/17/16 11:00 PM:
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Hi [~jeyhunkarimov], It seems I created this ticket as a duplicate of KAFKA-3817 and have actually fixed the {{groupBy}} issue myself. Sorry for the confusion.

I'm close this ticket now, feel free to work on https://issues.apache.org/jira/browse/KAFKA-3836. 


was (Author: guozhang):
Hi [~jeyhunkarimov], It seems I created this ticket as a duplicate of KAFKA-3817 and have actually fixed the {{groupBy}} issue myself. Sorry for the confusion.

I will create this ticket for now, feel free to work on https://issues.apache.org/jira/browse/KAFKA-3836. 

> Handling null keys in KTable.groupBy
> ------------------------------------
>
>                 Key: KAFKA-3839
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3839
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>            Reporter: Guozhang Wang
>            Assignee: Jeyhun Karimov
>              Labels: architecture, newbie
>
> This is first reported by [~jeff.klukas@gmail.com].
> Similarly as we handle null keys in KStream join and aggregations in KAFKA-3561 (https://github.com/apache/kafka/pull/1472), for KTable.groupBy operators we should also gracefully handle null keys by filter them out since they will not be participating in the aggregation.



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