Yeah spark builds are fine... For solvers we are planning to use breeze optimization since it has most of the core functions we will need and we can enhance it further (QP solver for example)
Right now sparse kmeans in spark mllib uses breeze and that might not even need this line of code....But still I thought Xiangrui should be aware of this issue... On Sun, Apr 6, 2014 at 9:07 AM, Sean Owen <so...@cloudera.com> wrote: > That's a Breeze question, no? you should not need to compile Breeze > yourself to compile Spark -- why do that? > > That method indeed only exists in Java 7. But Breeze seems to target > Java 6 as expected: > > https://github.com/scalanlp/breeze/blob/master/build.sbt#L59 > > I see this particular line of code was added after the last release: > > > https://github.com/scalanlp/breeze/commit/ff46ddfa66f98b8c8b0ef5b65a6e7a9f86b5a5c4 > > So it's possible it's an issue lurking in Breeze of just the same form > we just saw. It's worth opening an issue since, indeed, I would expect > exactly the compile error you see with Java 6. > > But it should not stop you from building Spark. > > > On Sun, Apr 6, 2014 at 5:00 PM, Debasish Das <debasish.da...@gmail.com> > wrote: > > Hi Koert, > > > > How do I specify that in sbt ? > > > > Is this the correct way ? > > javacOptions ++= Seq("-target", "1.6", "-source","1.6") > > > > Breeze project for examples compiles fine with jdk7, fails with jdk6 and > > the function it fails on: > > > > error] /home/debasish/github/breeze/ > > src/main/scala/breeze/util/package.scala:200: value valueOf is not a > member > > of object java.util.BitSet > > [error] java.util.BitSet.valueOf(bs.toBitMask) > > > > is not available in jdk6... > > > > http://docs.oracle.com/javase/6/docs/api/java/util/BitSet.html > > > > I have no clue how with target 1.6 solves the issue...are you saying jdk7 > > will put a function that's closest to java.util.BitSet.valueOf ? > > > > Thanks. > > Deb > > >
