Select col1,myudf(col2,col3) from table1;
In what phase if map reduce an udf is executed.
In the very beginning, I assumed that hive will be joining two tables.,
getting the required columns and then applies udf on columns specified
I.e., essentially on reducer phase . But later on I realised that I was
Is there any specific parameter which suggests hive to call udf at reducer
phase rather than at Mapper phase.
Sent from iPhone
Dean Wampler 2013-01-18, 14:54
nagarjuna kanamarlapudi 2013-01-18, 14:57
Dean Wampler 2013-01-18, 14:58