Hi, I have two questions when using udf: 1. if i do system.err.println , where does it print to ? is there a log file ?
2. if i did a group , what's the type of second column of the generated table ? is it always databag ? So if i use it in my udf, i need to cast it back to databag and use iterator to access each tuple, is it correct ? Thanks a lot, Weide
