tree d1cdd82708adbb29db087b397bb4916966fbc1ae
parent 8ba5944532d84c04001796c6b5b7f5abaf60825c
author Abdullah Alamoudi <bamousaa@gmail.com> 1497895300 -0700
committer abdullah alamoudi <bamousaa@gmail.com> 1497899742 -0700

ASTERIXDB-1945 [STO] Cleanup Buffer Cache API

Fix the buffer cache to follow the API such that:
1. createFile creates the file.
2. deleteFile deletes the file.
3. openFile opens the file.
4. closeFile closes the file.
5. creates existing file is not allowed.
6. deletes deleted file is not allowed.
7. open non existing file is not allowed.

In addition, we hide the file map from all other components.

Change-Id: I15565b07afdc94ac74c608bfe4480fa09dcf8f1c
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1840
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
BAD: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Murtadha Hubail <hubailmor@gmail.com>