Thanks Jun.

But I can't understand how consumer GC trigger kafka server issue:
java.lang.RuntimeException: A broker is already registered on the path
/brokers/ids/0. This probably indicates that you either have configured a
brokerid that is already in use, or else you have shutdown this broker and
restarted it faster than the zookeeper timeout so it appears to be
2013/3/28 Jun Rao <[EMAIL PROTECTED]>
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