Genmao Yu created KAFKA-7227:
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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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