Attempt with extra repositories
Remove trailing slashes from repository specifications.

The correct format is to not have a trailing slash.

For me this caused non-deterministic failures due to issues fetching
certain artifacts. The issue was that some of the maven caches would
fail to fetch the artifact (due to the way that the artifact
path was concatenated with the repository) and this short-circuited
the download process in a silent way. Here is what the log output
looked like:

    Downloading: http://repo.maven.apache.org/maven2/org/spark-project/akka/akka-remote_2.10/2.2.3-shaded-protobuf/akka-remote_2.10-2.2.3-shaded-protobuf.pom
    [WARNING] The POM for org.spark-project.akka:akka-remote_2.10:jar:2.2.3-shaded-protobuf is missing, no dependency information available

This was pretty brutal to debug since there was no error message
anywhere and the path *looks* correct as reported by the Maven log.
Removing extra code in new yarn
Cleanup
Clean-up
One other fix
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