Bugfix: WorkerWebUI must respect workDirPath from Worker

Add a shuffle parameter to coalesce.

Move streaming test initialization into 'before' blocks

Don't use deprecated Application in example

Update tuning.md

Make the example more compilable

As of 2.9.0 extending from Application is not recommended

http://www.scala-lang.org/api/2.9.3/index.html#scala.Application

Re-enable deprecation warnings and fix deprecated warning.

Conflicts:
	core/src/test/scala/spark/RDDSuite.scala

Make Executor fields volatile since they're read from the thread pool.

mapWith, flatMapWith and filterWith

This is useful for when you want just 1 output file (part-00000) but
still up the upstream RDD to be computed in parallel.

SPARK-715: Adds instructions for building with Maven to documentation

Added mapSideCombine flag to CoGroupedRDD. Added unit test for CoGroupedRDD.

[SPARK-707] Adding Java versions of Pi, LogQuery and K-Means examples

Add foldByKey

CoGroupedRDD.

CoalescedRDD for many partitions

Remove try/catch block that can't be hit.

call setConf from input format if it is Configurable

CoalescedRDD changed to work with a big number of partitions both in the original and the new coalesced RDD.
The limitation was in the range that Scala.Int can represent.