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From Joe Stein <joe.st...@stealth.ly>
Subject Re: Conflict stored data in Zookeeper
Date Tue, 05 Aug 2014 04:26:22 GMT
I have seen an issue similar to this but with the /controller node.

I am going to update https://issues.apache.org/jira/browse/KAFKA-1387 with
the steps to reproduce the issue I ran into right now.

I don't know what steps caused what you ran into it is very odd that
shouldn't happen.

Were you doing anything with the cluster before this happened?
starting/stopping nodes? any steps that might help reproduce it? any more
info in any logs?

I would recommend shutting down that node, make sure the znode is gone and
starting it back up again.

I also agree INFO is not a good status in that function, it is in a
while(true) loop that may never end should at least be a WARN.

/*******************************************
 Joe Stein
 Founder, Principal Consultant
 Big Data Open Source Security LLC
 http://www.stealth.ly
 Twitter: @allthingshadoop <http://www.twitter.com/allthingshadoop>
********************************************/


On Mon, Aug 4, 2014 at 10:23 PM, Bongyeon Kim <bongyeon.kim@gmail.com>
wrote:

> 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.
>
> --
> *Sincerely*
> *,**Bongyeon Kim*
>
> Java Developer & Engineer
> Seoul, Korea
> Mobile:  +82-10-9369-1314
> Email:  bongyeonkim@gmail.com
> Twitter:  http://twitter.com/tigerby
> Facebook:  http://facebook.com/tigerby
> Wiki: http://tigerby.com
>

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