ClassNotFoundException: com.nicta.scoobi.impl.exec.MscrMapper

[Jeff Zhang]

Hi all,

I use scoobi-0.6.0-cdh3-RC1 in hadoop-CDH3 cluster, but it throw ClassNotFoundException: com.nicta.scoobi.impl.exec.MscrMapper.

I check the jar file, it has the scoobi jar file. So I am not sure why it will throw ClassNotFoundException.

Here's the log details:

java.lang.RuntimeException: java.lang.ClassNotFoundException: com.nicta.scoobi.impl.exec.MscrMapper
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:996)
	at org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:212)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:602)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
	at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: java.lang.ClassNotFoundException: com.nicta.scoobi.impl.exec.MscrMapper
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943)
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:994)
	... 8 more