amplab/tachyon — pull request #318 by shimingfei (2014-08-04 05:01:08+00:00)
Title: add block handler to handle block files on different under file systems[Tachyon-33][SubTask 1]

details are on Tachyon's JIRA
BlockHandler is used to read and write block files on different under file systems, currently local file system is realized.