Mekaraj, Prashant wrote:
Hi,
http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html
is a great resource. It's rare to see a open source project think so
much about practical enterprise deployment and this is much
appreciated.
Thanks!
There are a few more recommendations that
We are running zookeeper 3.1.0
Recently we noticed the cpu usage on our machines becoming increasingly high
and we believe the cause is
https://issues.apache.org/jira/browse/ZOOKEEPER-427
However our solution when we noticed the problem was to kill the zookeeper
process and restart it.
12 servers? That's alot, if you dont' mind my asking why so many?
Typically we recommend 5 - that way you can have one down for
maintenance and still have a failure that doesn't bring down the cluster.
The electing a leader is probably the restarted machine attempting to
re-join the ensemble
I have a related question: what's the behavior of a cluster of 3 when
one is down? I've tried it and a leader is elected, but are there any
other caveats for this situation?
.. Adam
On Tue, Jan 12, 2010 at 2:40 PM, Patrick Hunt ph...@apache.org wrote:
12 servers? That's alot, if you dont' mind
In my last email I failded to include a log line that may be revelent as well
2010-01-12 18:33:10,658 [QuorumPeer:/0.0.0.0:2181] (QuorumCnxManager) DEBUG -
Queue size: 0
2010-01-12 18:33:10,659 [QuorumPeer:/0.0.0.0:2181] (FastLeaderElection) INFO -
Notification time out: 6400
We see this line
Doh - that makes total sense. For whatever reason I thought with 2
servers you couldn't get a majority :P
On Tue, Jan 12, 2010 at 3:17 PM, Henry Robinson he...@cloudera.com wrote:
Hi Adam -
As long as a quorum of servers is running, ZK will be live. With majority
quorums, 2/3 is enough to
Nick Bailey wrote:
In my last email I failded to include a log line that may be revelent as well
2010-01-12 18:33:10,658 [QuorumPeer:/0.0.0.0:2181] (QuorumCnxManager) DEBUG -
Queue size: 0
2010-01-12 18:33:10,659 [QuorumPeer:/0.0.0.0:2181] (FastLeaderElection) INFO -
Notification time out:
