File f1 = new File(TEST_DIR + "/testAutomaticRoll");
List<URI> editUris = ImmutableList.of(f1.toURI());
NNStorage storage = setupEdits(editUris, 3);
storage.format();
Configuration conf = new Configuration();
conf.setLong(FSEditLog.CONF_ROLL_TIMEOUT_MSEC, 200);
FakeNameNode fakeNN = new FakeNameNode();
AutomaticEditsRoller aer = new AutomaticEditsRoller(fakeNN);