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[expand - 1 more] - Re: Consistency in zookeeper - Zookeeper - [mail # user]
...Yes.  Sync doesn't guarantee up to date.  It guarantees an ordering.  It guarantees that if event A involves a ZK update and if you can guarantee that A occurs before sync, th...
   Author: Ted Dunning, 2013-03-02, 02:03
Re: High availability backend services via zookeeper or TCP load balancer - Zookeeper - [mail # user]
...I think that Camille's points are well founded.  However, I have just had two years experience with the opposite approach in which we use ZK as a way of doing application level load bal...
   Author: Ted Dunning, 2013-02-26, 20:55
Re: async multi requests in the Java client - Zookeeper - [mail # dev]
...Yeah.  It was an oversight.  I did the java client and I ten not to think much about the asynchronous interfaces so I never designed anything along those lines.    Should...
   Author: Ted Dunning, 2013-02-02, 03:48
[expand - 1 more] - Re: Getting confused with the "recipe for lock" - Zookeeper - [mail # user]
...On Mon, Jan 14, 2013 at 10:32 PM, Hulunbier  wrote:    How is a distributed clock going to work if you can't talk to zookeeper?...
   Author: Ted Dunning, 2013-01-17, 11:43
Re: Move/Rename api - Zookeeper - [mail # dev]
...Also, frankly, the multi doesn't otherwise have any way of communicating the contents obtained by get to the subsequent create.  This alternative sequence is much cleaner that way. &nbs...
   Author: Ted Dunning, 2013-01-12, 06:52
Re: ZK on EC2 micro instances? - Zookeeper - [mail # user]
...I have tried it on small instances (a few years ago) and it didn't work well.  I attributed the problems at the time to the fact that the small instances could check out for significant...
   Author: Ted Dunning, 2012-12-15, 16:10
Re: Znodes are really wait-free objects? - Zookeeper - [mail # user]
...Wait-free means that from the user's point of view, all operations will proceed or fail immediately.  Synchronization internal to the server to ensure coherent memory access doesn't rea...
   Author: Ted Dunning, 2012-12-10, 17:58
[expand - 3 more] - Re: determining zookeeper capacity requirements - Zookeeper - [mail # user]
...On Fri, Dec 7, 2012 at 6:50 PM, Ian Kallen  wrote:    Good theory except that it may compromise getting cores.    Excellent....
   Author: Ted Dunning, 2012-12-07, 19:24
[expand - 2 more] - Re: very uneven distribution of clients to servers... - Zookeeper - [mail # user]
...Next test would be to incorporate a small patch to seed the shuffling of server names by the client ID or something.  On Thu, Dec 6, 2012 at 12:32 PM, Brian Tarbox  wrote:  ...
   Author: Ted Dunning, 2012-12-07, 01:25
[expand - 1 more] - Re: Network partition and ephemeral nodes - Zookeeper - [mail # user]
...Any single ZK operation will throw an error if a disconnect from the quorum is detected during an operation.  The way that you would normally see this in the middle of a fast sequence o...
   Author: Ted Dunning, 2012-11-25, 21:30
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB