Re: Multitenancy in Spark - within/across spark context

2014-10-25 Thread RJ Nowling
Ashwin, What is your motivation for needing to share RDDs between jobs? Optimizing for reusing data across jobs? If so, you may want to look into Tachyon. My understanding is that Tachyon acts like a caching layer and you can designate when data will be reused in multiple jobs so it know to keep

Re: Matix operations in Scala \ Spark

2014-10-25 Thread Zongheng Yang
We recently released a research prototype of a lightweight matrix library for Spark here: https://github.com/amplab/ml-matrix which does support norm and subtraction. Feel free to base your implementation on top of it. Zongheng On Sat, Oct 25, 2014 at 07:12 Xuefeng Wu wrote: > how about non/spir

Re: Matix operations in Scala \ Spark

2014-10-25 Thread Xuefeng Wu
how about non/spire or twitter/scalding Yours, Xuefeng Wu 吴雪峰 敬上 > On 2014年10月25日, at 下午9:03, salexln wrote: > > Hi guys, > > I'm working on the implementation of the FuzzyCMeans algorithm (Jira > https://issues.apache.org/jira/browse/SPARK-2344) > and I need to use some operations on Matrice

Matix operations in Scala \ Spark

2014-10-25 Thread salexln
Hi guys, I'm working on the implementation of the FuzzyCMeans algorithm (Jira https://issues.apache.org/jira/browse/SPARK-2344) and I need to use some operations on Matrices (norm & subtraction) I could not find any Scala\ Spark Matrix class that will support these actions. Should I implement th