Pig UDF compilation error

[SRINIVAS SURASANI]

Hi,

Iam able to compile pig udf for pig-0.8.0 version . Its giving me an error
when I have tried compiling on pig-0.8.1 version.

following is the error message:

     cannot access org.apache.hadoop.io.WritableComparable
class file for org.apache.hadoop.io.WritableComparable not found
                       if ( input = null || input.size() = 0)
                                             ^

Any help apprecaited!

Thanks,
Srini