Conflict stored data in Zookeeper

Hi, everyone.

I'm using 0.8.1.1, and I have 8 brokers and 3 topics each have 16
partitions and 3 replicas.

I got unseen logs like below. this is occur every 5 seconds.

[2014-08-05 11:11:32,478] INFO conflict in /brokers/ids/2 data:
{"jmx_port":9992,"timestamp":"1407204339990","host":"172.25.63.9","version":1,"port":9092}
stored data:
{"jmx_port":9992,"timestamp":"1407204133312","host":"172.25.63.9","version":1,"port":9092}
(kafka.utils.ZkUtils$)
[2014-08-05 11:11:32,479] INFO I wrote this conflicted ephemeral node
[{"jmx_port":9992,"timestamp":"1407204339990","host":"172.25.63.9","version":1,"port":9092}]
at /brokers/ids/2 a while back in a different session, hence I will backoff
for this node to be deleted by Zookeeper and retry (kafka.utils.ZkUtils$)

I hope to know the what makes this messages.
Is it OK that's not ERROR? How can I remove that message?

Thanks in adavnce.

Java Developer Engineer
Seoul, Korea
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