public HiveConf getSessionConf(SessionHandle sessionHandle)
      throws HiveSQLException {
	  return sessionManager.getSession(sessionHandle).getSessionConf();
  }
If this is a background operation run asynchronously,
we block for a duration determined by a step function, before we return
However, if the background operation is complete, we return immediately.
service/src/java/org/apache/hive/service/cli/CLIService.java