Some tests could go directly to the localsystem instead of using a DFS cluster. This speeds-up the test.
TestScanner From 60s to 5s
TestCompaction from 140s to 15s
TestGetClosestAtOrBefore from 9s to 1s
TestStoreFile from 30s to 2s
TestWideScanner: 18s -> 3s
TestFSTableDescriptorForceCreation 3s -> 1s
There is a partial dependency with
HBASE-4634, as we now write on localdisk the data is not freed when the test is over.