@Override
      public boolean accept(Path file) {
        return dirFilter.accept(file) && !file.getName().startsWith(".");
      }
Test that the region directory is removed when we archive a region without store files, but
still has hidden files.
@throws IOException throws an IOException if there's problem creating a table or if there's an
                    issue with accessing FileSystem.
hbase-server/src/test/java/org/apache/hadoop/hbase/backup/TestHFileArchiving.java