protected Map<String, String> getCommandParameters() {
    if (executionCommand == null) {
      return Collections.emptyMap();
    } else {
      return executionCommand.getCommandParams();
    }
  }
Returns the command parameters value from the ExecutionCommand
<p/>
The returned map should be assumed to be read-only.

@return the (assumed read-only) command parameters value from the ExecutionCommand
ambari-server/src/main/java/org/apache/ambari/server/serveraction/AbstractServerAction.java