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From "Hongyuan Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14623) fixed some bugs in KafkaSink
Date Fri, 21 Jul 2017 08:14:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16095937#comment-16095937
] 

Hongyuan Li commented on HADOOP-14623:
--------------------------------------

Hi, [~bharatviswa], find that the kafka client must have the same version of kafka server,
or the new producer api will not functions well.The old {{kafka.javaapi.producer}} Producer
functions well, but it will be removed from the future kafka version.
The following is the stack trace when use kafka client 0.10.0 to write into kaffa server 0.9.0.
{code}
org.apache.kafka.common.protocol.types.SchemaException: Error reading field 'topic_metadata':
Error reading array of size 1702065152, only 29 bytes available
	at org.apache.kafka.common.protocol.types.Schema.read(Schema.java:73)
	at org.apache.kafka.clients.NetworkClient.parseResponse(NetworkClient.java:380)
	at org.apache.kafka.clients.NetworkClient.handleCompletedReceives(NetworkClient.java:449)
	at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:269)
	at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:236)
	at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:135)
	at java.lang.Thread.run(Thread.java:745)
{code} 

Any good idea? 

> 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, HADOOP-14623-002.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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