public synchronized void init() throws IOException {
    if (!bootStrapDir.exists()) {
      boolean mkdirs = bootStrapDir.mkdirs();
      if (!mkdirs) {
        throw new IOException("Unable to make directory for " +
            "bootstrap " + bootStrapDir);
      }
    }
  }
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