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From Ted Yu <yuzhih...@gmail.com>
Subject hbase export in cluster mode
Date Thu, 08 Apr 2010 21:58:15 GMT
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:
[root@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

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