Improved comment
Refactoring to make job removal, stage removal, task cancellation clearer
Cleaned up job cancellation handling
Tightly couple stageIdToJobIds and jobIdToStageIds
Local jobs post SparkListenerJobEnd, and DAGScheduler data structure
cleanup always occurs before any posting of SparkListenerJobEnd.
Synchronous, inline cleanup after runLocally
SparkListenerJobStart posted from local jobs
Marked doCheckpointCalled as transient.
Merge pull request #218 from JoshRosen/spark-970-pyspark-unicode-error

Fix UnicodeEncodeError in PySpark saveAsTextFile() (SPARK-970)

This fixes [SPARK-970](https://spark-project.atlassian.net/browse/SPARK-970), an issue where PySpark's saveAsTextFile() could throw UnicodeEncodeError when called on an RDD of Unicode strings.

Please merge this into master and branch-0.8.
Merge pull request #223 from rxin/transient

Mark partitioner, name, and generator field in RDD as @transient.

As part of the effort to reduce serialized task size.
Add missing space after "Serialized" in StorageLevel

Current code creates outputs like:

scala> res0.getStorageLevel.description
res2: String = Serialized1x Replicated
Typo: applicaton
Merge pull request #226 from ash211/patch-4

Typo: applicaton
Fix small bug in web UI and minor clean-up.

There was a bug where sorting order didn't work correctly for write time metrics.

I also cleaned up some earlier code that fixed the same issue for read and
write bytes.
Merge pull request #225 from ash211/patch-3

Add missing space after "Serialized" in StorageLevel

Current code creates outputs like:

scala> res0.getStorageLevel.description
res2: String = Serialized1x Replicated
Merge pull request #81 from amplab/clean1

Codebase refactoring
Merge pull request #227 from pwendell/master

Fix small bug in web UI and minor clean-up.

There was a bug where sorting order didn't work correctly for write time metrics.

I also cleaned up some earlier code that fixed the same issue for read and
write bytes.
add mask operation to Graph
add filter operation to GraphOps
Fix compile errors in GraphSuite and SerializerSuite