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https://issues.apache.org/jira/browse/HADOOP-14623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16079033#comment-16079033
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Hongyuan Li commented on HADOOP-14623:
--------------------------------------

I highly recommend Two points:
1、should use acks = 1.
2、update kafka client version to 0.10.1. which has a IntegerSerializer class If 
kafka sink want to generate a kafka producer with the the type of key being 
Integer.
The last patch will fix the two, If you don't think so, close the jira.Thanks.

> fixed some bugs in KafkaSink 
> -----------------------------
>
>                 Key: HADOOP-14623
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14623
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: common, tools
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Hongyuan Li
>            Assignee: Hongyuan Li
>         Attachments: HADOOP-14623-001.patch
>
>
> {{KafkaSink}}#{{init}}  should set ack to *1* to make sure the message has 
> been written to the broker at least.
> current code list below:
> {code}
>   
>     props.put("request.required.acks", "0");
> {code}
> *Update*
> find another bug about this class, {{key.serializer}} used 
> {{org.apache.kafka.common.serialization.ByteArraySerializer}}, however, the 
> key properties of Producer is Integer, codes list below:
> {code}
>     props.put("key.serializer",
>         "org.apache.kafka.common.serialization.ByteArraySerializer");
> ……………
>  producer = new KafkaProducer<Integer, byte[]>(props);
> {code}



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