private static boolean isFamilyDir(final FileSystem fs, final Path path) throws IOException {
    return isRegionDir(fs, path.getParent());
  }
Execute the actual compaction job. If the compact once flag is not specified, execute the
compaction until no more compactions are needed. Uses the Configuration settings provided.
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/regionserver/CompactionTool.java