gistfile1.txt

I am trying to get my head around the sorting example. I use this as a input:

$ hadoop fs -cat /input/small*     
9971681
9686036
2592322
4518219
1467363
607354
....

I use the identity classes for the map/reduce tasks:

$ cat sort_ident.sh 
rm -rf ./output
hadoop fs -rmr /output
hadoop jar /home/drio/hadoop-0.20.0/contrib/streaming/hadoop-0.20.0-streaming.jar \
-mapper org.apache.hadoop.mapred.lib.IdentityMapper \
-reducer org.apache.hadoop.mapred.lib.IdentityReducer \
-input /input \
-output /output 

The map tasks die with this exception:

java.io.IOException: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable
...