I think I found the answer:

http://mail-archives.apache.org/mod_mbox/incubator-kafka-users/201204.mbox/%3CCAFbh0Q3BxaAkyBq1_yUHhUkkhxX4RBQZPAA2pkR4U9+[EMAIL PROTECTED]%3E

As describe in the link above it should append only one time and after
parent was created the there are any exceptions occurred and that is
exactly how it happens in my situation.

On Tue, Jul 23, 2013 at 12:54 PM, Oleg Ruchovets <[EMAIL PROTECTED]>wrote:
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