[jira] [Commented] (KAFKA-4830) Augment KStream.print() to allow users pass in extra parameters in the printed string

["Matthias J. Sax (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-4830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014715#comment-16014715 ] 

Matthias J. Sax commented on KAFKA-4830:
----------------------------------------

[~james.c] KAFKA-4772 got merged. So feel free to work on this JIRA now :)

> Augment KStream.print() to allow users pass in extra parameters in the printed string
> -------------------------------------------------------------------------------------
>
>                 Key: KAFKA-4830
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4830
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>            Reporter: Guozhang Wang
>              Labels: needs-kip, newbie
>
> Today {{KStream.print}} use the hard-coded result string as:
> {code}
> "[" + this.streamName + "]: " + keyToPrint + " , " + valueToPrint
> {code}
> And some users are asking to augment this so that they can customize the output string as {{KStream.print(KeyValueMapper<K, V, String>)}} :
> {code}
> "[" + this.streamName + "]: " + mapper.apply(keyToPrint, valueToPrint)
> {code}



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