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Migrating ZooKeeper cluster to new hostnames via rolling restart - Zookeeper - [mail # user]
...Hi guys,  I'm looking to switch out 2 servers out of a 5-server cluster. The problem for me is.. the 2 servers will have different IP addresses and host names.  So basically the mi...
   Author: Martin Kou, 2013-09-25, 07:38
Re: how to monitor the zookeeper's memory use - Zookeeper - [mail # user]
...You can use JMX for that.  Sent from my iPhone  ...
   Author: Martin Kou, 2013-09-06, 10:05
Re: issue about write sync in majority followers - Zookeeper - [mail # user]
...The follower doesn't persist in the beginning - not until it's sure it had the consensus of the quorum. Also, the client only talks to the node it is connected to.  The general algorith...
   Author: Martin Kou, 2013-09-06, 04:11
Re: how to allocate memory to zookeeper? - Zookeeper - [mail # user]
...You can use JMX for monitoring.  Sent from my iPhone  ...
   Author: Martin Kou, 2013-09-06, 03:59
Re: Can ZK be used for my use case? - Zookeeper - [mail # user]
...How large are your files? ZooKeeper is generally not designed for large size storage. Also, it doesn't provide guarantees of watchers being called when network outage is involved.  Sent...
   Author: Martin Kou, 2013-09-06, 03:53
Re: Zoo Keep widely distributed? - Zookeeper - [mail # user]
...The latency will make your writes really slow - since each write operation would need to be confirmed by more than half of your total number of servers in the cluster to succeed. Writes to Z...
   Author: Martin Kou, 2013-08-27, 06:19
[expand - 1 more] - Re: determining ZK latency issues - Zookeeper - [mail # user]
...Naha,  Do you have the distribution of the request latencies? If you're seeing something like the top 1% of requests taking 5s while the rest take double digit ms, and average out to th...
   Author: Martin Kou, 2013-08-09, 09:31
[expand - 1 more] - Re: "Client session timed out, have not heard from server in 143198ms", etc. - Zookeeper - [mail # user]
...Anyone?  Best Regards, Martin Kou   On Mon, Jun 17, 2013 at 12:23 AM, Martin Kou  wrote:  ...
   Author: Martin Kou, 2013-07-19, 23:50
Re: session expired suddenly after just receive 'Unable to read data from server' - Zookeeper - [mail # user]
...Have you checked the corresponding ZooKeeper logs on the server side? Perhaps the ZooKeeper server had already expired the session before 01:00?  Best Regards, Martin Kou   On Wed,...
   Author: Martin Kou, 2013-06-24, 22:23
Re: Determine when ZooKeeper Instance is in-sync - Zookeeper - [mail # user]
...Try telnet'ing to the ZooKeeper server and run the 'stat' command there. It'll tell you whether it's ready serving request or not.  Best Regards, Martin Kou   On Mon, Jun 24, 2013 ...
   Author: Martin Kou, 2013-06-24, 22:21
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