public synchronized static void initialize(Connection conn) throws SQLException {
  if (logHadoopIdPatterns != null && logLineagePatterns != null) {
    return;
  }
  loadLineagePatterns(conn);
  loadHadoopIdPatterns(conn);
}

public synchronized static void initialize ( Connection conn ) throws SQLException { if ( logHadoopIdPatterns != null && logLineagePatterns != null ) { return ; } loadLineagePatterns ( conn ) ; loadHadoopIdPatterns ( conn ) ; }
initialize , download the regex info into cache
