Thanks for your response Owen:) Yes, I define K as ClassTag type and it works. Sorry for bothering.
On Thu, Apr 7, 2016 at 4:07 PM, Sean Owen <so...@cloudera.com> wrote: > It means pretty much what it says. Your code does not have runtime > class info about K at this point in your code, and it is required. > > On Thu, Apr 7, 2016 at 5:52 AM, Tenghuan He <tenghua...@gmail.com> wrote: > > Hi all, > > > > I want to create an empty rdd and partition it > > > > val buffer: RDD[(K, (V, Int))] = base.context.emptyRDD[(K, (V, > > Int))].partitionBy(new HashPartitioner(5)) > > but got Error: No ClassTag available for K > > > > scala needs at runtime to have information about K , but how to solve > this? > > > > Thanks in advance. > > > > Tenghuan >
