synchronized void updateStatus(long requestId, BootStrapStatus status) {
    bsStatus.put(Long.valueOf(requestId), status);
  }
update status of a request. Mostly called by the status collector thread.
@param requestId the request id.
@param status the status of the update.
ambari-server/src/main/java/org/apache/ambari/server/bootstrap/BootStrapImpl.java