Added isDirectory to tachyon file, added directory check in mkdir tests
active remove.
Tachyon FS and Hadoop FS nameing.
add timeout logic for master client.
better stop logic for HeartbeatThread, and better naming for master client.
add worker client heartbeat, remove the heartbeat in tfs client.
1. add getSpace for underfs. 2. rename static getXXX() to be get()
remove clientfileinfo from tachyonfile.
Merge branch 'master' of https://github.com/amplab/tachyon
TachyonFile API naming.
Multiple client side file lock should on invoke one RPC.
1. recursive write. 2. remove some exceptions.
master client only expose IOException and TException to the upper layer.
worker client only expose IOException and TException to the upper layer.
Use common conf in MasterLogWriterTest, include jsp compiler and runtime jars in pom
Fixed profiles for pom, changed log4j back to .17, removed duplicate function in tachyonFile
merge master
fix pom formatting
fix pom formatting some more
fix pom formatting some more