This is because we pull out such a large sample (10x the number of
partitions) that we should expect pretty good balance. The tests are
also deterministic so there's no worry about them failing irreproducibly.

RangePartitioner to make it pass. It turns out that the first partition
was always kind of small due to how we picked partition boundaries.

Bug fix in RangePartitioner for partitioning when sorting in descending order.

Logging Throwables in Info and Debug

Logging Throwables in logInfo and logDebug instead of swallowing them.

add Accumulatable, add corresponding docs & tests for accumulators

Always destroy SparkContext in after block for the unit tests.

Instantiating custom serializer using user's classpath

Scalacheck groupId has changed https://github.com/rickynils/scalacheck/i...

Scalacheck groupId has changed https://github.com/rickynils/scalacheck/issues/24. Necessary to build with scalaVersion 2.9.2. Works with 2.9.1 too.

This reverts commit b3eeac55.

This reverts commit f58da616, reversing
changes made to 4449eb97.