private static Path getRecoveredHFilesDir(final Path regionDir, String familyName) {
    return new Path(new Path(regionDir, familyName), HConstants.RECOVERED_HFILES_DIR);
  }
@param regionDir  This regions directory in the filesystem
@param familyName The column family name
@return The directory that holds recovered hfiles for the region's column family
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALSplitUtil.java