Re: How to perform reduce operation in the same order as partition indexes

2016-05-19 Thread Pulasthi Supun Wickramasinghe
Hi Ayan, Thanks for the reply. Yes that is what i am currently doing. I thought there may be a more efficient way provided by spark that i could use directly. Best Regards, Pulasthi On Thu, May 19, 2016 at 6:42 PM, ayan guha wrote: > You can add the index from mappartitionwithindex in the outp

Re: How to perform reduce operation in the same order as partition indexes

2016-05-19 Thread ayan guha
You can add the index from mappartitionwithindex in the output and order based on that in merge step On 19 May 2016 13:22, "Pulasthi Supun Wickramasinghe" wrote: > Hi Devs/All, > > I am pretty new to Spark. I have a program which does some map reduce > operations with matrices. Here *shortrddFina

How to perform reduce operation in the same order as partition indexes

2016-05-18 Thread Pulasthi Supun Wickramasinghe
Hi Devs/All, I am pretty new to Spark. I have a program which does some map reduce operations with matrices. Here *shortrddFinal* is a of type " *RDD[Array[Short]]"* and consists of several partitions *var BC = shortrddFinal.mapPartitionsWithIndex(calculateBCInternal).reduce(mergeBC)* The map fu