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

[mengxr]

Github user mengxr commented on the pull request:

    https://github.com/apache/incubator-spark/pull/575#issuecomment-34712992
  
    @debasish83 Are you speaking of the benchmark I posted to the JIRA? 
BLAS/LAPACK cannot be used for dense vector + sparse vector. Those are designed 
for dense-only operations. So netlib-java is not involved in the benchmark. The 
performance issue I showed in the benchmark was fixed yesterday but we need to 
wait for the next release in order to switch to it.