N/task Module
MapReduceScriptTaskStatus.getTotalReduceCount()
Method Description: Returns the total number of record or row inputs to the reduce stage of a task.MapReduceScriptTask. Use the MapReduceScriptTaskStatus.stage property to get the current stage. For general information about map/reduce stages, see Map/Reduce Key Concepts and SuiteScript 2.0 Map/Reduce Script Stages.
Returns: number
Supported Script Types: Server scripts For more information, see SuiteScript 2.0 Script Types.
Governance: 10 units
Module: N/task Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=MapReduceScriptTaskStatus.getTotalReduceCount()

// Code Example 1

//Add additional code

//...

var summary = taskStatus.getTotalReduceCount();

log.audit({

    details: 'Reduce Count: ' + summary

    });

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_458279663085.html