amplab/tachyon — pull request #461 by dcapwell (2014-10-02 23:03:19+00:00)
Title: Refactor storage dir

I propose that we make `StorageDir` the entry point and drop `BlockHandler`. The core reasons for this are that:

`BlockHandler` is the same thing as java's `Channel`. Easier to use one std convention than create a new one.
`StorageDir` is the main entry point anyways, since the path is relative to the tier, so `BlockHandler` can't be the gateway since it's path depends on the `StorageDir`.