Reorganize yarn related codes into sub projects to remove duplicate files.
Fix pom for yarn code reorgnaize commit
Change profile name new-yarn to hadoop2.2-yarn
Fix yarn/assemble pom file
Fix pom file for scala binary version
some code clean up for Yarn 2.2
Add README for yarn modules
Fix yarn/README.md and update docs/running-on-yarn.md
Update maven build documentation
A few clean up for yarn 2.0 code
Need to send dummy hello message to actually estabilish akka connection.
merge yarn/scheduler yarn/common code into one directory
Use unmanaged source dir to include common yarn code
Fix pom for build yarn/2.x with yarn/common into one jar
Clean up unused files for yarn
Fix yarn/README.md
Add yarn/common/src/test dir in building script
Using name yarn-alpha/yarn instead of yarn-2.0/yarn-2.2
move duplicate pom config into parent pom
minor fix for loginfo