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Re: High CPU usage on zookeeper clients when cluster is down - Zookeeper - [mail # user]
...I'd say that some randomness added here would help. E.g. to use 700-1300 msinstead of hard coded one second.2014-06-19 18:14 GMT-04:00 Luke Stephenson : ...
   Author: Vitalii Tymchyshyn, 2014-06-20, 02:10
Re: Partitioned Zookeeper - Zookeeper - [mail # user]
...On second thought some kind of wayback machine is needed for the coldrecovery/coordinator change for the case when transaction N is applied andN-1 is not. But it should be enough to have kin...
   Author: Vitalii Tymchyshyn, 2014-05-26, 08:47
Small introduction FAQ on Zookeeper - Zookeeper - [mail # user]
...Hello.  After today's speech I've decided to publish small FAQ about Zookeeper for people who don't know what Zookeeper is: http://blog.vit.tym.im/post/61779783773/what-apache-zookeeper...
   Author: Vitalii Tymchyshyn, 2013-09-20, 19:51
Re: Semantics of close and ephemeral nodes - Zookeeper - [mail # user]
...As far as I understand, it is guaranteed to be closed on the leader. I am not sure about another servers.   2013/5/3 Rohan Desai      Best regards,  Vitalii Tymchysh...
   Author: Vitalii Tymchyshyn, 2013-05-03, 12:03
Re: Getting confused with the "recipe for lock" - Zookeeper - [mail # user]
...BTW: We've had to introduce external cron script that were killing processes spending too much in GC. That helped in similar situation.   2013/1/16 Benjamin Reed      Bes...
   Author: Vitalii Tymchyshyn, 2013-01-27, 19:29
Re: ZK on EC2 micro instances? - Zookeeper - [mail # user]
...Please note that micro instance has very bad CPU pattern - as soon as you go through some limit in CPU usage, it starts to crawl, literally. It's something like 98% of stolen CPU time (don't...
   Author: Vitalii Tymchyshyn, 2012-12-17, 02:22
Re: leader election, scheduled tasks, losing leadership - Zookeeper - [mail # user]
...I am asking because you have this "at most once" vs "at least one" problem. I don't think you can have "exactly one" unless your jobs are transactional and you can synhronize your transactio...
   Author: Vitalii Tymchyshyn, 2012-12-11, 20:09
Re: Connection closed exceptions with slow fsync and CancelledKeyExceptions - Zookeeper - [mail # user]
...What's your filesystem & vm.dirty_ratio? May be your OS flushes a lot sometimes. See e.g. http://www.sysxperts.com/home/announce/vmdirtyratioandvmdirtybackgroundratio   2012/11/7 mattgo...
   Author: Vitalii Tymchyshyn, 2012-11-12, 00:12
Re: forceSync=no - Zookeeper - [mail # user]
...Hello.  Please note that in general not doing fsync may lead to inconsistent  data where latter data was written and earlier was not. This may not be  a problem if ZooKeeper v...
   Author: Vitalii Tymchyshyn, 2012-06-18, 12:55
Re: Get sequence number without node creation - Zookeeper - [mail # user]
...18.11.11 11:20, Ivan Kelly написав(ла): This will work on connection drop, but not for disconnect/reconnect AFAIK....
   Author: Vitalii Tymchyshyn, 2011-11-18, 12:42
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