{"action":"opened","issue":{"url":"https://api.github.com/repos/alibaba/RocketMQ/issues/284","repository_url":"https://api.github.com/repos/alibaba/RocketMQ","labels_url":"https://api.github.com/repos/alibaba/RocketMQ/issues/284/labels{/name}","comments_url":"https://api.github.com/repos/alibaba/RocketMQ/issues/284/comments","events_url":"https://api.github.com/repos/alibaba/RocketMQ/issues/284/events","html_url":"https://github.com/alibaba/RocketMQ/issues/284","id":162381453,"number":284,"title":"自动创建的Topic的用处分别是什么？","user":{"login":"Jaskey","id":5210351,"avatar_url":"https://avatars.githubusercontent.com/u/5210351?v=3","gravatar_id":"","url":"https://api.github.com/users/Jaskey","html_url":"https://github.com/Jaskey","followers_url":"https://api.github.com/users/Jaskey/followers","following_url":"https://api.github.com/users/Jaskey/following{/other_user}","gists_url":"https://api.github.com/users/Jaskey/gists{/gist_id}","starred_url":"https://api.github.com/users/Jaskey/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Jaskey/subscriptions","organizations_url":"https://api.github.com/users/Jaskey/orgs","repos_url":"https://api.github.com/users/Jaskey/repos","events_url":"https://api.github.com/users/Jaskey/events{/privacy}","received_events_url":"https://api.github.com/users/Jaskey/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-06-27T06:21:42Z","updated_at":"2016-06-27T06:21:42Z","closed_at":null,"body":"系统启动的时候，会自动创建一些TOPIC，如集群名称，broker名称，defaultTopic(TBW102)，`OFFSET_MOVED_EVENT`\r\n\r\n这些Topic都各自有什么用处？"}}
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