you can try the "ReverseEnumerate" package from datafu on the inner bag and then filter for 0th element. http://datafu.incubator.apache.org/docs/datafu/1.2.0/datafu/pig/bags/ReverseEnumerate.html
*Cheers !!* Arvind On Mon, Jun 22, 2015 at 1:50 PM, 李运田 <[email protected]> wrote: > I have data like : > > (lucy,{(34,,45),(34,,45),(34,,45),(34,,45),(34,,45),(34,,45),(34,,45),(34,,45),(34,,45)}) > > (lili,{(12,lili,23),(12,lili,23),(12,lili,23),(12,lili,34),(12,lili,23),(12,lili,89),(12,lili,23),(12,lili,23),(12,lili,23),(12,lili,34),(12,lili,23),(12,lili,89),(12,lili,23),(12,lili,23)}) > > (limaomao,{(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56),(,limaomao,56)}) > its metadata is: t2: {group: chararray,t1: {(a: int,b: chararray,c: int)}} > I can get first tuple of t1 using limit or FirstTupleFromBag.html .But, > How I can get every last tuple of t1. > thanks >
