Merge pull request #426 from mateiz/py-ml-tests

Re-enable Python MLlib tests (require Python 2.7 and NumPy 1.7+)

We disabled these earlier because Jenkins didn't have these versions.
(cherry picked from commit 4c16f79ce45a68ee613a3d565b0e8676b724f867)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
Merge pull request #437 from mridulm/master

Minor api usability changes

- Expose checkpoint directory - since it is autogenerated now
- null check for jars
- Expose SparkHadoopUtil : so that configuration creation is abstracted even from user code to avoid duplication of functionality already in spark.
(cherry picked from commit 73dfd42fba5e526cc57e2a2ed78be323b63cb8fa)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
Merge pull request #459 from srowen/UpdaterL2Regularization

Correct L2 regularized weight update with canonical form

Per thread on the user@ mailing list, and comments from Ameet, I believe the weight update for L2 regularization needs to be corrected. See http://mail-archives.apache.org/mod_mbox/spark-user/201401.mbox/%3CCAH3_EVMetuQuhj3__NdUniDLc4P-FMmmrmxw9TS14or8nT4BNQ%40mail.gmail.com%3E
(cherry picked from commit fe8a3546f40394466a41fc750cb60f6fc73d8bbb)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
Rolling back versions for 0.9.0 release
Typo fix in build versions
[maven-release-plugin] prepare release v0.9.0-incubating
[maven-release-plugin] prepare for next development iteration