There is no reduce phase needed in this query. On Fri, Jan 18, 2013 at 6:59 AM, nagarjuna kanamarlapudi < nagarjuna.kanamarlap...@gmail.com> wrote:
> Hi, > > 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 > wrong. > > Is there any specific parameter which suggests hive to call udf at reducer > phase rather than at Mapper phase. > > > Regards, > Nagarjuna > > > -- > Sent from iPhone > -- *Dean Wampler, Ph.D.* thinkbiganalytics.com +1-312-339-1330
