I ran hbase export in cluster mode. >From Saturn: 10/04/07 14:18:22 INFO zookeeper.ClientCnxn: zookeeper. disableAutoWatchReset is false 10/04/07 14:18:22 INFO zookeeper.ClientCnxn: Attempting connection to server uranus/10.10.31.18:2181 10/04/07 14:18:22 INFO zookeeper.ClientCnxn: Priming connection to java.nio.channels.SocketChannel[connected local=/10.10.31.16:34170remote=uranus/ 10.10.31.18:2181] 10/04/07 14:18:22 INFO zookeeper.ClientCnxn: Server connection successful 10/04/07 14:18:22 INFO mapreduce.TableInputFormatBase: split: 0*->Neptune*:, 10/04/07 14:18:23 INFO mapred.JobClient: Running job: job_201004051529_0015 10/04/07 14:18:24 INFO mapred.JobClient: map 0% reduce 0% 10/04/07 14:18:36 INFO mapred.JobClient: Task Id : attempt_201004051529_0015_m_000000_0, Status : FAILED Error: java.lang.ClassNotFoundException: org.apache.zookeeper.Watcher at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:621) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$000(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) at org.apache.hadoop.hbase.client.HConnectionManager.getClientZooKeeperWatcher(HConnectionManager.java:151) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getZooKeeperWrapper(HConnectionManager.java:885) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:901) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:580) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:556) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:630) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:589) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:556) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:630) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:593) at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:556) at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:127) at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:105) at org.apache.hadoop.hbase.mapreduce.TableInputFormat.setConf(TableInputFormat.java:73) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:62) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:536) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305) at org.apache.hadoop.mapred.Child.main(Child.java:170)
I wonder why the above exception was thrown because we have same hbase deployment on all the servers: [r...@neptune software]# ls -l lib/zookeeper-3.2.1.jar -rwxr-xr-x 1 hbaseadmin hbaseadmin 913093 Oct 7 11:55 lib/zookeeper-3.2.1.jar Can someone shed some light on how to get over the above exception ? Thanks