public static HRegionFileSystem create(final Configuration conf, final FileSystem fs,
    final Path tableDir, final RegionInfo regionInfo) throws IOException {
    return new HRegionFileSystem(conf, fs, tableDir, regionInfo);
  }
sleeping logic for static methods; handles the interrupt exception. Keeping a static version
for this to avoid re-looking for the integer values.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionFileSystem.java