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https://issues.apache.org/jira/browse/ROCKETMQ-223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065993#comment-16065993
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ASF GitHub Bot commented on ROCKETMQ-223:
-----------------------------------------

Github user lizhanhui commented on the issue:

    https://github.com/apache/incubator-rocketmq/pull/119
  
    I am +1 to rename the default topic name.
    
    In addition,  we'd better resolve all known issues relating the 
auto-create-topic mechanism.
    
    1.  Can we rename the name to something to void potential topic name 
collision?
    1. Currently, once auto create was enabled, the auto_create topic is 
persisted, even if we later disable auto-creation, the topic is still there 
which does not make sense. IMO, we may exclude this topic from persistence.



> Rename DEFAULT_TOPIC
> --------------------
>
>                 Key: ROCKETMQ-223
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-223
>             Project: Apache RocketMQ
>          Issue Type: Improvement
>          Components: rocketmq-commons
>    Affects Versions: 4.0.0-incubating
>            Reporter: Jaskey Lam
>            Assignee: Jixiang Jin
>            Priority: Minor
>
> DEFAULT_TOPIC is now set to `TBW102` which makes no sense to understand it's 
> usage, actually this is an important topic which to support auto create topic 
> when sending message.
> While because of the strange naming, user can hardly understand.



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