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

[fommil]

Github user fommil commented on the pull request:

    https://github.com/apache/incubator-spark/pull/575#issuecomment-35036443
  
    @mengxr and someone decided to roll their own instead of talking to me, 
why? I've had previous discussions with Apache about the MTJ license and I said 
we could probably work around it by contacting the original author. The only 
reason we didn't do anything was because commons-math didn't want to use the 
f2j java binaries because it has class file manipulation.