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From "Genmao Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-7227) Kafka cluster should has a default rack id if not set
Date Wed, 01 Aug 2018 12:38:03 GMT
Genmao Yu created KAFKA-7227:
--------------------------------

             Summary: Kafka cluster should has a default rack id if not set
                 Key: KAFKA-7227
                 URL: https://issues.apache.org/jira/browse/KAFKA-7227
             Project: Kafka
          Issue Type: Improvement
          Components: core
    Affects Versions: 2.0.0, 1.0.0
            Reporter: Genmao Yu


In current behavior, if partial of broker machines have "server.rack",  we will failed
to create topic with exception like "Not all brokers have rack information". There is no big
problem in local cluster. But, this behavior may not be very suitable for cloud environment.
In cloud environment, there may be different types of machine, some has rack info, while
others do not has rack info. It could happen for many reasons, like understock of specific
machine. We can give each broker a default rack id. 
 * if not set any rack info, it is the same with previous behavior
 * if partial of brokers are set with rack info, we can think of the remaining brokers as
same rack.

As far as know, if not set rack id, DataNode/NodeManager has a default rack id in Hadoop. 

 

 



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