This is all zookeeper logging, and although it's chatty I don't see anything wrong in it (the NodeExists is normal since in 0.20 there are some places that instead of checking for a znode existence, we try to create it and only if it fails we update it). Also we log everything that comes out of ZK.
J-D On Fri, Jul 9, 2010 at 6:31 PM, Arun Ramakrishnan <aramakrish...@languageweaver.com> wrote: > Hi Guys > > Some background if it might be helpful. > We have a 12 node cluster. The following steps were taken to reconfigure > the cluster. > I shutdown hbase. Removed 6 nodes from hdfs and added 4 new nodes. Ensured > the all the blocks were fully replicated ( thrice ). > Then, I restarted the hbase with edited region servers list ( old nodes > removed ). I also changed the zookeeper quorum from 3 nodes to just 1. > > Here is some of the problems I am facing > > In the zookeeper log. I find tons and tons of these. > > #################################### > 2010-07-09 18:22:16,956 WARN > org.apache.zookeeper.server.PrepRequestProcessor: Got exception when > processing sessionid:0x129b9ae443a01bc type:create cxid:0x > 3 zxid:0xfffffffffffffffe txntype:unknown n/a > org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = > NodeExists > at > org.apache.zookeeper.server.PrepRequestProcessor.pRequest(PrepRequestProcessor.java:245) > at > org.apache.zookeeper.server.PrepRequestProcessor.run(PrepRequestProcessor.java:114) > 2010-07-09 18:22:17,207 INFO org.apache.zookeeper.server.NIOServerCnxn: > Connected to /192.168.130.92:44503 lastZxid 0 > 2010-07-09 18:22:17,207 INFO org.apache.zookeeper.server.NIOServerCnxn: > Creating new session 0x129b9ae443a01bd > 2010-07-09 18:22:17,209 INFO org.apache.zookeeper.server.NIOServerCnxn: > Finished init of 0x129b9ae443a01bd valid:true > 2010-07-09 18:22:17,458 INFO > org.apache.zookeeper.server.PrepRequestProcessor: Processed session > termination request for id: 0x129b9ae443a01bc > 2010-07-09 18:22:17,459 INFO org.apache.zookeeper.server.NIOServerCnxn: > closing session:0x129b9ae443a01bc NIOServerCnxn: > java.nio.channels.SocketChannel[con > nected local=/192.168.130.71:2181 remote=/192.168.130.92:43171] > 2010-07-09 18:22:18,539 WARN > org.apache.zookeeper.server.PrepRequestProcessor: Got exception when > processing sessionid:0x129b9ae443a01bd type:create cxid:0x > 2 zxid:0xfffffffffffffffe txntype:unknown n/a > ##################################### > > > > Thanks > Arun > >
