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Re: Network partition and ephemeral nodes - Zookeeper - [mail # user]
...Yes if quorum is intact but the client cannot connect to the zookeeper, the session and the ephemeral nodes will expire. It is up to users of ZK for locking to correctly assume that a given ...
   Author: Camille Fournier, 2012-11-25, 18:49
Re: faster way to delete a subtree? - Zookeeper - [mail # user]
...Have you looked into the new multi-transaction features in 3.4? I think it might be faster to group these into batches and do the delete that way. I can't think of any other alternatives tho...
   Author: Camille Fournier, 2012-11-22, 17:37
Re: 'Move' operation for Zookeeper - Zookeeper - [mail # user]
...You can simulate this using multi transactions in the current system. I think the transactionality of move in the way you are suggesting breaks down to a multi transaction, so implementing i...
   Author: Camille Fournier, 2012-11-15, 20:02
Call for Topics for ZK Meetup - Zookeeper - [mail # user]
...Hi all,  One of the topics we will be discussing at the meetup tomorrow is issues around 3.4.X and 3.5, as well as release processes. If you have any suggestions for areas to dig into i...
   Author: Camille Fournier, 2012-10-24, 18:08
Re: ZooKeeper Scale - Zookeeper - [mail # user]
...I believe that folks at FB have done some very very heavy-load ZK usage and could talk more about scale, but I suspect that the current releases of ZK would not scale to what you are looking...
   Author: Camille Fournier, 2012-10-16, 01:31
[expand - 2 more] - Re: Reminder: Meetup at Strata and call for topics! - Zookeeper - [mail # user]
...Yes I will find a place to host slides after the meetup.  C On Oct 15, 2012 12:18 PM, "Mathias Herberts"  wrote:  ...
   Author: Camille Fournier, 2012-10-15, 17:17
Re: identify the cause of a large quantity of zookeeper threads - Zookeeper - [mail # user]
...Are you properly reusing your ZooKeeper clients? You should (probably) create one client and share it throughout your process to send requests to the server, not create a new client per usag...
   Author: Camille Fournier, 2012-10-03, 19:24
[expand - 1 more] - Re: split ZK cluster across DCs? - Zookeeper - [mail # user]
...Good point. The monitor and restart trick is if you need the second DC to be voting for BCP purposes (over 3 datacenters), but otherwise an Observer is the way to go.  C  On Fri, S...
   Author: Camille Fournier, 2012-09-28, 17:55
Re: Millions of opened connections to Zookeeper cluster possible? - Zookeeper - [mail # user]
...You'll run out of file descriptors on the ZK servers, most likely, and when you do, the processes will behave VERY badly. I do not recommend this if you can design some other way.  C &n...
   Author: Camille Fournier, 2012-09-18, 00:35
Meetup during Strata/Hadoop World - Zookeeper - [mail # user]
...Hi everyone,  For those of you attending Strata/Hadoop World here in lovely New York, we're hosting a meetup! http://www.meetup.com/zookeeperusergroup/events/81954542/  It will be ...
   Author: Camille Fournier, 2012-09-11, 23:13
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