In addition, your UDF needs to have the attribute "nulls = NullHandling.INTERNAL"
On Tue, Oct 6, 2015 at 8:32 AM, Abdel Hakim Deneche <adene...@maprtech.com> wrote: > Hi Tug, > > Let's say your UDF returns an int, your @output field will be defined like > this: > > @Output NullableIntHolder out; > > > To return a NULL you just have to set: > > out.isSet = 0; > > > Thanks > > On Tue, Oct 6, 2015 at 1:56 AM, Tugdual Grall <tugd...@gmail.com> wrote: > > > Hello Drillers, > > > > I am developing a custom function and I would like to return NULL (based > on > > the value, for example if the varchar is '' I want my function to return > > NULL) > > > > I have not found the way to do it. > > > > > > Regards > > Tug > > @tgrall > > > > > > -- > > Abdelhakim Deneche > > Software Engineer > > <http://www.mapr.com/> > > > Now Available - Free Hadoop On-Demand Training > < > http://www.mapr.com/training?utm_source=Email&utm_medium=Signature&utm_campaign=Free%20available > > >
