Does nutch segments from hadoop .7.1 different from hadoop .10.1

[Gal Nitzan <gn...@usa.net>]

Hi,

Just updated to trunk and I get the following exception while doing
mergesegs on segments crawled/parsed on hadoop .7.1

java.lang.RuntimeException: readObject can't find class
	at
org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:179)
	at
org.apache.hadoop.io.ObjectWritable.readFields(ObjectWritable.java:61)
	at
org.apache.nutch.metadata.MetaWrapper.readFields(MetaWrapper.java:100)
	at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.spill(MapTask.java:427)
	at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpillToDisk(MapTask.
java:385)
	at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$200(MapTask.java:239
)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:188)
	at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1367)
Caused by: java.lang.ClassNotFoundException: (a lot of garbage here)....
at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:315)
	at
org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:177)
	... 7 more