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From "Billy Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KYLIN-3393) Building streaming cube do not need to set “KAFKA_HOME” environment variable
Date Sat, 02 Jun 2018 05:22:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498889#comment-16498889
] 

Billy Liu commented on KYLIN-3393:
----------------------------------

[~wuyingjun], Kylin does not depend on the Kafka Server, but the Kafka Client. So you do not
need to install Kafka into kylin node, but copy the necessary client library. That's the same
thing we are doing with Hadoop/Hive/HBase as Shaofeng said. Kylin keeps the dependency libraries
out of the package to make it more compatible with the environment. If Kylin ships the fixed-version
client libraries in binary, you have to recompile everything if the client library has conflicts
with the server side. 

> Building streaming cube do not need to set  “KAFKA_HOME” environment variable
> -----------------------------------------------------------------------------
>
>                 Key: KYLIN-3393
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3393
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: wuyingjun
>            Assignee: wuyingjun
>            Priority: Major
>         Attachments: 1.png, 2.png, KYLIN-3393.patch
>
>
> You need hava  KAFKA environment and set “KAFKA_HOME” environment variable when
building streaming cube, or else you can not submit a streaming cube building job, like pic
1;
> After we change the kafka dependency scope mode described in the KYLIN-3393.patch , we
can build streaming cube without a kafka environment in the kylin service node successfully,
like pic 2;



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