Hi Richard, Are you running zookeeper-server? The default port on which ZK listens is 2181 and so it may also be worth doing a netstat -ap | grep 2181 to see if it is up.
Can you also post your hbase-site.xml configs? Thanks, Aleks S. Cloudera On Tue, Sep 18, 2012 at 9:09 AM, Richard Tang <[email protected]>wrote: > Hi, All, > I have some problems in setting up distributed hbase cluster. My setup is a > 3-node hbase cluster, (node3 for hmaster and zk, and node4/5 for > regionservers). It is attached with a 3-node hdfs cluster (node 6 for > namenode, and node7/8 for datanodes). Passphrase-less ssh have been setup > from node3 to node4 (and from node3 to node5) and from node6 to node7 (and > from node6 to node8). > > When I start hbase from node3, I have following error found in hbase log > files. > > @node3 > 2012-09-18 08:23:11,523 INFO > org.apache.zookeeper.server.PrepRequestProcessor: Got user-level > KeeperException when processing sessionid:0x139d9c2d4a50000 type:create > cxid:0x8 zxid:0x1d3 txntype:-1 reqpath:n/a Error Path:/hbase/master > Error:KeeperErrorCode = NodeExists for /hbase/master > > @node4 > 2012-09-18 08:23:27,328 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 > for server null, unexpected error, closing socket connection and attempting > reconnect > java.net.ConnectException: Connection refused > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > at > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592) > at > > org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:286) > at > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1035) > 2012-09-18 08:23:27,429 WARN > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient > ZooKeeper exception: > org.apache.zookeeper.KeeperException$ConnectionLossException: > KeeperErrorCode = ConnectionLoss for /hbase/master > 2012-09-18 08:23:27,429 ERROR > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: ZooKeeper exists > failed after 3 retries > 2012-09-18 08:23:27,429 WARN org.apache.hadoop.hbase.zookeeper.ZKUtil: > regionserver:60020 Unable to set watcher on znode /hbase/master > org.apache.zookeeper.KeeperException$ConnectionLossException: > KeeperErrorCode = ConnectionLoss for /hbase/master > at > org.apache.zookeeper.KeeperException.create(KeeperException.java:99) > at > org.apache.zookeeper.KeeperException.create(KeeperException.java:51) > at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1021) > at > > org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:154) > at > > org.apache.hadoop.hbase.zookeeper.ZKUtil.watchAndCheckExists(ZKUtil.java:226) > at > > org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.start(ZooKeeperNodeTracker.java:76) > at > > org.apache.hadoop.hbase.regionserver.HRegionServer.initializeZooKeeper(HRegionServer.java:563) > at > > org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:532) > at > > org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:634) > at java.lang.Thread.run(Thread.java:679) > > I have managed to run hbase under single-node configuration (with the same > system setup), without problems. Please let me know the possible cause or > howto for approaching the problem cause. > > Regards, > Richard > -- Best Regards, Aleks Shulman 847.814.5804 Cloudera
