Fwd: HiveInputSplit not found

Hi, My hive jobs are failing with the below error. Haven't been able to figure this one out. Can you please throw some light on this? java.io.IOException: Split class org.apache.hadoop.hive.ql.io.HiveInputFormat$HiveInputSplit not found at org.apache.hadoop.mapred.MapTask.getSplitDetails

# of failed Reduce Tasks exceeded allowed limit

Hello All, I am running the following hive query in a 10 node cluster on very huge dataset (6.6 billion records) create table tst as select a,b,c,d,..w, sum(case when x= 'C' then 1 else 0 end) as CS, sum(case when y = 'I' then 1 else 0 end) as IP, sum(case when z= 'A' then 1 els