Removing docs on akka options
Minor fixes
Bug fix for reporting of spill output
Force use of LZF when spilling data
Fixing speculation bug
Remove shuffle files if they are still present on a machine.
Avoid matching attempt files in the checkpoint
Made run-example respect SPARK_JAVA_OPTS and SPARK_MEM.
Adding small code comment
Removed SPARK_MEM from run-examples.
Merge pull request #484 from tdas/run-example-fix

Made run-example respect SPARK_JAVA_OPTS and SPARK_MEM.

bin/run-example scripts was not passing Java properties set through the SPARK_JAVA_OPTS to the example. This is important for examples like Twitter** as the Twitter authentication information must be set through java properties. Hence added the same JAVA_OPTS code in run-example as it is in bin/spark-class script.

Also added SPARK_MEM, in case someone wants to run the example with different amounts of memory. This can be removed if it is not tune with the intended semantics of the run-example scripts.

@matei Please check this soon I want this to go in 0.9-rc4
Style clean-up
Merge pull request #480 from pwendell/0.9-fixes

Handful of 0.9 fixes

This patch addresses a few fixes for Spark 0.9.0 based on the last release candidate.

@mridulm gets credit for reporting most of the issues here. Many of the fixes here are based on his work in #477 and follow up discussion with him.