What is the difference between brokerName and brokerClusterName

[zhihui921016]

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BUG REPORT

1. Please describe the issue you observed:

• What did you do (The steps to reproduce)?

Why does brokerClusterName need to be suffixed with "brokerGroupIndex"? As I understand it, one cluster contains multiple brokers

• What did you expect to see?
  brokerClusterName removes the brokerGroupIndex suffix

• What did you see instead?
  brokerClusterName is suffixed with "brokerGroupIndex"

2. Please tell us about your environment:
   operator:0.2.0

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

[hxnan]

I am confusing with the brokerClusterName too.

[hxnan]

I prefer to set the clusterName in broker.Spec.ClusterName