[GitHub] incubator-spark pull request: [Proposal] Adding sparse data suppor...

[debasish83]

Github user debasish83 commented on the pull request:

    https://github.com/apache/incubator-spark/pull/575#issuecomment-34710100
  
    @mengxr as long as the interface is clean and we can bring in netlib-java, 
start with mahout-math does not seem like a bad idea...netlib-java uses jni 
while it seems using jna/bridj might be even faster....it is an evolving 
area...any idea why netlib-java is showing so much worse runtime compared to 
mahout-math ? does not seem right if they are using the underlying fortran blas 
libraries ! is it a bug ? are they aware of it ?