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Posted to jira@kafka.apache.org by "Matthias J. Sax (JIRA)" <ji...@apache.org> on 2017/07/06 23:19:00 UTC

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

     [ https://issues.apache.org/jira/browse/KAFKA-4830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias J. Sax updated KAFKA-4830:
-----------------------------------
    Fix Version/s: 0.11.1.0

> 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
>            Assignee: james chien
>              Labels: kip, newbie
>             Fix For: 0.11.1.0
>
>
> 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}
> Original KIP-132: https://cwiki.apache.org/confluence/display/KAFKA/KIP-132%3A+Augment+KStream.print+to+allow+extra+parameters+in+the+printed+string
> Duplicating KIP-160: https://cwiki.apache.org/confluence/display/KAFKA/KIP-160%3A+Augment+KStream.print%28%29+to+allow+users+pass+in+extra+parameters+in+the+printed+string



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