executeMapReduceScript: function (scriptId, deploymentId, duplicateIfRunning, params) {
                var mrTask = task.create({
                    taskType: task.TaskType.MAP_REDUCE,
                    scriptId: scriptId
                });
                if (deploymentId)
                    mrTask.deploymentId = deploymentId;

                try {
                    if (params) {
                        mrTask.params = params;
                        log.debug('PARAMS', params);
                    }
                    var mrTaskId = mrTask.submit();
                } catch (e) {
                    log.error('TASK FAILED', e);
                    if (e.name === 'MAP_REDUCE_ALREADY_RUNNING' && duplicateIfRunning) {
                        if (this.duplicateMapReduceDeployment(scriptId))
                            mrTask.submit();
                    }
                }
                if (mrTaskId)
                    log.debug('MAP/REDUCE', 'Task ID: ' + mrTaskId + ' Submitted task (' + mrTask.deploymentId + ')');
                return mrTaskId;
            },