[jira] [Commented] (SPARK-17935) Add KafkaForeachWriter in external kafka-0.8.0 for structured streaming module

["Cody Koeninger (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-17935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15626774#comment-15626774 ] 

Cody Koeninger commented on SPARK-17935:
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Some other things to think about:
- are there any producer configurations you don't want to support?
- specifically, are you only going to support byte array serializers for writing key and value?
- if you're only supporting byte array, how do you clearly document for users how to handle their common use case (i.e. I have one string column I want to be the key, and the others columns should be json name/value pairs in the message)

> Add KafkaForeachWriter in external kafka-0.8.0 for structured streaming module
> ------------------------------------------------------------------------------
>
>                 Key: SPARK-17935
>                 URL: https://issues.apache.org/jira/browse/SPARK-17935
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL, Streaming
>    Affects Versions: 2.0.0
>            Reporter: zhangxinyu
>
> Now spark already supports kafkaInputStream. It would be useful that we add `KafkaForeachWriter` to output results to kafka in structured streaming module.
> `KafkaForeachWriter.scala` is put in external kafka-0.8.0.



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