public void putParameter(String name, String value) {
    putParameterIfAbsent(name, value);
    updateUnmodifiableParameters();
  }
Put a new parameter to the listener event.

Overridden parameters is not allowed, and an exception may be thrown to avoid a mis-configuration
between listeners setting the same parameters.

@param name Name of the parameter.
@param value Value of the parameter.
@throws IllegalStateException if a parameter already exists.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/events/ListenerEvent.java