3.4.1 <= pushing the curve =8^) /* Joe Stein http://www.medialets.com Twitter: @allthingshadoop */
On Nov 29, 2011, at 10:44 PM, Camille Fournier <[email protected]> wrote: > We've been looking at that, see: > https://issues.apache.org/jira/browse/ZOOKEEPER-107 > > It'll take some evaluation though. Hopefully 3.5? > > C > > On Tue, Nov 29, 2011 at 10:21 PM, nileader <[email protected]> wrote: >> I personal think zookeeper team need to add the feature of changing >> zookeeper cluster server list in runtime---without restart server. >> >> 2011/11/30 nileader <[email protected]> >> >>> Hi，ted，you mean restart old server before new servers? >>> Let's see the case: >>> >>> In my cluster, there are three zk server, A,B and C each config three >>> server address. >>> Once, i want to upgrade my cluster to five server. >>> You say: >>> >>>> configure the new servers >>>> >>>> - update the configuration on the old servers >>>> >>>> - restart each old server one at a time >>>> >>>> - start the new servers >>>> >>>> >>> >>> So, when i config Server C's serverlist, it will be five server in it's >>> zoo.cfg, and restart it. >>> Then make change on server b. Once i restart server b, there will be only >>> two server work in cluster, >>> and 2< 5/2+1. >>> >>> So, how the leader will be elect and how the cluster will work ok? >>> >>> >>> >>> >>> >>> *nileader* ni掌櫃的個人郵箱 >>> *MSN*： [email protected] >>> *Weibo*：http://weibo.com/nileader >>> ------------------------------------------------------------------------------------------------------------------------------------------------ >>> This email (including any attachments) is confidential and may be legally >>> privileged, private information of correct recipient and nileader. If you >>> received this email in error, please delete it immediately and do not copy >>> it or use it for any purpose or disclose its contents to any other person. >>> Thank you. >>> * >>> 本電郵(包括任何附件)可能含有機密資料並受法律保護，屬於ni掌櫃和正確收件人之間的私有信息。如您不是正確的收件人，請您立即刪除本郵件。請不要將本電郵進行複製並用作任何其它用途，或透露本郵件之內容。謝謝。 >>> * >>> >>> >>> >>> 2011/11/29 Ted Dunning <[email protected]> >>> >>>> To expand on that FAQ, the detailed process should be to >>>> >>>> - configure the new servers >>>> >>>> - update the configuration on the old servers >>>> >>>> - restart each old server one at a time >>>> >>>> - start the new servers >>>> >>>> - have your applications reconnect with the full set of servers in the >>>> connection string. This can be done whenever you like. >>>> >>>> Your clients will receive a disconnect message when the server that they >>>> are talking to is restarted, but they should reconnect immediately and >>>> transparently. You may have a problem if your applications don't handle >>>> transient disconnections properly. >>>> >>>> >>>> >>>> On Tue, Nov 29, 2011 at 3:10 AM, pubudu gunawardena <[email protected] >>>>> wrote: >>>> >>>>> On Tue, Nov 29, 2011 at 1:08 PM, nileader <[email protected]> wrote: >>>>>> >>>>>> hi, all. >>>>>> >>>>>> If i update my conf/zoo.cfg config, must i restart my zk server? >>>>>> >>>>>> In my case, we have 3 servers in production environment, now, we want >>>> to >>>>>> upgrade to 5 server. >>>>> >>>>> Take a look at http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A6 where it >>>>> says >>>>> how to upgrade ZooKeeper. >>>>>> >>>>>> >>>>>> Any problem will happen if a kill one of three servers. >>>>>> >>>>>> >>>>>> *[email protected]* >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Thanks, >>>>> Pubudu >>>>> >>>> >>> >>>
