FAQ
Hey There,
I have set up a cluster wich is suposed to work properly. I can add data
files and read them from a java app.
But when I ejecute a mapred job I am getting this exception:
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:123)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:612)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:328)
at org.apache.hadoop.mapred.Child$4.run(Child.java:217)
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:742)
at org.apache.hadoop.mapred.Child.main(Child.java:211)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.util

Any idea why is this happening?

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postedSep 16, '10 at 2:38p
activeSep 21, '10 at 11:02a
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Marc Sturlese: 2 posts

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