public void setExceptionDuringUpdater(boolean exceptionDuringUpdater) {
    this.exceptionDuringUpdater = exceptionDuringUpdater;
  }
Whether to throw exception if update method is called.
@param exceptionDuringUpdater whether exception occurs during updater.
ambry-clustermap/src/test/java/com/github/ambry/clustermap/MockHelixPropertyStore.java