Is there a relationship between data and index? I.e with a,b,c to 1,2,3? On 30 Jul 2015 12:13, "askformore" <askf0rm...@163.com> wrote:
> I have some data like this: RDD[(String, String)] = ((*key-1*, a), ( > *key-1*,b), (*key-2*,a), (*key-2*,c),(*key-3*,b),(*key-4*,d)) and I want > to group the data by Key, and for each group, add index fields to the > groupmember, at last I can transform the data to below : RDD[(String, > *Int*, String)] = ((key-1,*1*, a), (key-1,*2,*b), (key-2,*1*,a), (key-2, > *2*,b),(key-3,*1*,b),(key-4,*1*,d)) I tried to groupByKey firstly, then I > got a RDD[(String, Iterable[String])], but I don't know how to use > zipWithIndex function to each Iterable... thanks. > ------------------------------ > View this message in context: help plz! how to use zipWithIndex to each > subset of a RDD > <http://apache-spark-user-list.1001560.n3.nabble.com/help-plz-how-to-use-zipWithIndex-to-each-subset-of-a-RDD-tp24071.html> > Sent from the Apache Spark User List mailing list archive > <http://apache-spark-user-list.1001560.n3.nabble.com/> at Nabble.com. >
