I need to implement secondary sort within an avro based MR sequence. I however find little to documentation or examples online. I would like to implement this by overriding the 'int compare(AvroWrapper<T> x, AvroWrapper<T> y)' method but I fail to have it invoked. Does anybody have experience implementing secondary sort on deserialised avro objects ?
Some help, advise or pointers will be very much appreciated !
