Patrick just let me know that newer client talking to older server is not supported. I didn't know that. Thanks for pointing it out. Was sort of surprised it worked at all so just noted this aspect of my zk 3.3.0 RC0 eval.
Congrats on new release lads, St.Ack P.S. Below is backup of my assertion 3.3.0 client basically works against 3.2.2 ensemble: In client log I see this: 2010-03-25 12:23:57,670 INFO org.apache.zookeeper.ZooKeeper: Client environment:zookeeper.version=3.3.0-925362, built on 03/19/2010 18:38 GMT ... Then this: 2010-03-25 12:23:57,672 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=sv2borg165:2181,sv2borg166:2181,sv2borg167:2181,sv2borg169:2181,sv2borg164:2181 sessionTimeout=60000 watcher=Thread[Thread-0,5,main] 2010-03-25 12:23:57,683 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server sv2borg166/10.20.20.166:2181 2010-03-25 12:23:57,686 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to sv2borg166/10.20.20.166:2181, initiating session .. Over on 166 I see... 2010-03-25 12:23:57,697 INFO org.apache.zookeeper.server.NIOServerCnxn: Connected to /10.20.20.185:46331 lastZxid 0 2010-03-25 12:23:57,725 INFO org.apache.zookeeper.server.NIOServerCnxn: Creating new session 0x3266d5140d70759 2010-03-25 12:23:57,726 INFO org.apache.zookeeper.server.NIOServerCnxn: Finished init of 0x3266d5140d70759 valid:true 2010-03-25 12:25:07,305 INFO org.apache.zookeeper.server.NIOServerCnxn: Processing stat command from /10.20.20.185:60661 2010-03-25 12:25:07,306 WARN org.apache.zookeeper.server.NIOServerCnxn: Exception causing close of session 0x0 due to java.io.IOException: Responded to info probe 2010-03-25 12:25:07,306 INFO org.apache.zookeeper.server.NIOServerCnxn: closing session:0x0 NIOServerCnxn: java.nio.channels.SocketChannel[connected local=/10.20.20.166:2181 remote=/10.20.20.185:60661] ... If I do stat over there I see Zookeeper version: 3.2.2-888565, built on 12/08/2009 21:51 GMT... On Thu, Mar 25, 2010 at 2:00 PM, Patrick Hunt <ph...@apache.org> wrote: > Stack, you can't use a new client with an old server. We support b/w > compatibility at the server level (new server works with old client) but not > the other way around. You would have to upgrade the server and client at the > same time, or upgrade the servers (rolling upgrade) then upgrade the > clients. > > Patrick > > Stack wrote: >> >> +1 >> >> All hbase tests pass with 3.3.0 in place. I ran small loading and >> nothing odd looking. Looks like no issue having a zk 3.3.0 client >> talk to a 3.2.2 ensemble. >> >> Requires small mods to hbase other than dropping new zk jar into >> hbase/lib in place of zk 3.2.2: HBASE-2380. >> >> St.Ack >> >> On Fri, Mar 19, 2010 at 12:43 PM, Patrick Hunt <ph...@apache.org> wrote: >>> >>> I have created a candidate build for ZooKeeper 3.3.0. Over 180 JIRAs are >>> addressed in this release. >>> >>> *** Please download, test and VOTE before the >>> *** vote closes 1pm PT on Wednesday, March 24.*** >>> >>> http://people.apache.org/~phunt/zookeeper-3.3.0-candidate-0/ >>> >>> Should we release this? >>> >>> Patrick >>> >>> >>> >>> >>> >>> >