modify to pass job annotation by localProperties and use daeamon thread to do joblogger's work
Merge branch 'master' of https://github.com/mesos/spark
delete test code for joblogger in SparkContext
not check return value of eventQueue.take
modify sparklister function interface according to comments
fix typo and coding style
Update ASM to version 4.0
Merge pull request #654 from lyogavin/enhance_pipe

fix typo and coding style in #638
Fix some dependency issues in SBT build (same will be needed for Maven):

- Exclude a version of ASM 3.x that comes from HBase
- Don't use a special ASF repo for HBase
- Update SLF4J version
- Add sbt-dependency-graph plugin so we can easily find dependency trees
Merge branch 'master' of github.com:mesos/spark
edit according to comments
some format modification
small format modification
small modify in DAGScheduler
Add Python timing instrumentation
Prefork Python worker processes
Add tests and fixes for Python daemon shutdown
Rename PythonWorker to PythonWorkerFactory
PySpark daemon: fix deadlock, improve error handling
use parens when calling method with side-effects