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Re: Sequential znode creation and sync - Zookeeper - [mail # user]
...Hi Luca,  The whole tree -- when an update (such as create) returns the local server's tree reflects all the updates scheduled before the create.  Alex  On Sun, Mar 18, 2012 a...
   Author: Alexander Shraer, 2012-03-19, 05:33
[expand - 4 more] - Re: Zookeeper on short lived VMs and ZOOKEEPER-107 - Zookeeper - [mail # user]
...I think this is why when you're doing rolling restarts / reconfiguration you should never have two different servers that have any chance of being up at the same time with the same id. With ...
   Author: Alexander Shraer, 2012-03-16, 18:37
[expand - 1 more] - RE: Rolling upgrades - Zookeeper - [mail # user]
...I don't think they must be an odd number, but it does make sense to have an  odd number because with majority quorums the fault tolerance you get with 3 servers is  the same as the...
   Author: Alexander Shraer, 2012-03-09, 00:15
[expand - 2 more] - RE: Possibility / consequences of having multiple elected leaders - Zookeeper - [mail # user]
...Thanks Ted, I can see your point. We use TCP connections and we do the epoch check at the beginning of the protocol, so a message from an old leader cannot just resurface.  Alex  F...
   Author: Alexander Shraer, 2012-03-08, 23:09
Re: Setting Zookeeper server cluster on single host - Zookeeper - [mail # user]
...you need to have a different set of ports for each server in the config files. Otherwise ports 5181 and 5888 just get taken by the first server...  server.1= server.2...
   Author: Alexander Shraer, 2012-03-07, 15:12
[expand - 1 more] - RE: Review Request: Add zk.updateServerList(newServerList) - Zookeeper - [mail # dev]
...Hi Flavio,   I forgot to mention, with regard to one of your comments   This solves a problem I mentioned here: https://issues.apache.org/jira/browse/ZOOKEEPER-1343 You mentioned t...
   Author: Alexander Shraer, 2012-02-24, 20:16
RE: Branch for reconfiguration (ZOOKEEPER-107)? - Zookeeper - [mail # dev]
...Hi Flavio,  I've been basically working on my own branch for many months now. The probl em is that the main trunk is changing all the time, and of course the merge is difficu lt as you ...
   Author: Alexander Shraer, 2012-01-20, 18:47
RE: Performing no downtime hardware changes to a live zookeeper cluster - Zookeeper - [mail # dev]
...Hi Neha, Camille,  I wanted to share something we did as part of the dynamic membership change  feature development (ZK-107) that seems very related to the discussion her e and mig...
   Author: Alexander Shraer, 2012-01-09, 22:23
RE: Hybrid Server Lists - Zookeeper - [mail # user]
...In some cases this may lead to split brain. This may happen if you have two servers S1 and S2, who's server lists L1 and L2 are such th at  some quorum of L1 doesn't intersect with some...
   Author: Alexander Shraer, 2011-12-21, 19:59
[expand - 1 more] - RE: ZK107 - Allow dynamic changes to server cluster membership - Zookeeper - [mail # dev]
...That would be great. I will upload it soon, by next year you'll have it for sure :)  Alex  ...
   Author: Alexander Shraer, 2011-12-15, 00:20
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