SuiteScript Tutorial - Map-Reduce Script | What is Map-Reduce Script | Basics of Map Reduce

NetSuite SuiteScript Tutorial - Map-Reduce Script| What is Map-Reduce Script? | Basics of Map Reduce Script

#mapreduce #netsuite

The map/reduce script type is designed for scripts that need to handle large amounts of data. It is best suited for situations where the data can be divided into small, independent parts. When the script is executed, a structured framework automatically creates enough jobs to process all of these parts. You do not have to manage this process; NetSuite does it all for you. Another advantage of map/reduce is that these jobs can work in parallel and you can choose the level of parallelism when you deploy the script.

Like a scheduled script, a map/reduce script can be invoked manually or on a predefined schedule. However, map/reduce scripts offer several advantages over scheduled scripts. One advantage is that, if a map/reduce job violates certain aspects of NetSuite governance, the map/reduce framework automatically causes the job to yield and its work to be rescheduled, without disruption to the script. However, be aware that some aspects of map/reduce governance cannot be handled through automatic yielding. For that reason, if you use this script type, you should familiarize yourself with the Map/Reduce Governance guidelines.

In general, you should use a map/reduce script for any scenario where you want to process multiple records, and where your logic can be separated into relatively lightweight segments. In contrast, a map/reduce script is not as well suited to situations where you want to enact a long, complex function for each part of your data set. A complex series of steps might be one that includes the loading and saving of multiple records.

Map/Reduce Key Concepts

Inspired by the map/reduce paradigm, the general idea behind a map/reduce script is as follows:

Your script identifies some data that requires processing.

This data is split into key/value pairs.

Your script defines a function that the system invokes one time for each key/value pair.

Optionally, your script can also use a second round of processing.

Depending on how you deploy the script, the system can create multiple jobs for each round of processing and process the data in parallel.

Map/reduce scripts are executed in stages
With most script types, each script is executed as a single continuous process. In contrast, a map/reduce script is executed in five discrete stages that occur in a specific sequence.

You can control the script’s behavior in four of the five stages. That is, each of these four stages corresponds to an entry point. Your corresponding function defines the script’s behavior during that stage.

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⏱️⏱️VIDEO CHAPTERS⏱️⏱️

00:00 - Intro
00:05 - Scenario for Map-Reduce Script
00:20 - Simple Script Flow
01:20 - Map-Reduce Design Pattern
01:40 - Map-Reduce Stages in Suitescript
02:10 - InputStage in Map-Reduce Suitescript
02:17 - Map Stage in Map-Reduce Suitescript
02:55 - Shuffle Stage in Map-Reduce Suitescript
03:32 - Reduce Stage in Map-Reduce Suitescript
04:30 - Summarize/Output Stage in Map-Reduce Suitescript
05:30 - Create Map-Reduce Suitescript using Visual Studio Code
05:55 - Map-Reduce Suitescript Syntax
06:40 - Movie Ratings Custom Record Configuration
07:50 - Create Saved Search on Movie Ratings Custom Record
08:45 - Map Reduce Script - getInputData Stage
10:08 - Map Reduce Script - getInputData Flow
10:18 - Map Reduce Script - Map Stage
12:19 - Map Reduce Script - Map Flow
12:48 - Map Reduce Script - Shuffle Stage & Flow
13:18 - Map Reduce Script - Reduce Stage
14:36 - Map Reduce Script - Reduce Flow
15:11 - Map Reduce Script - Summarize Flow
15:25 - Map Reduce Script - Summarize Stage
16:55 - Upload Map Reduce Script to NetSuite
17:03 - Create Script Record
18:19 - Run Map Redue Script Manually
19:00 - Map Redue Script Status
19:35 - Map Redue Script Execution log
23:06 - Map Redue Concurrency Limit as Two
25:00 - Map Redue Concurrency Limit Empty
26:48 - Map Redue Concurrency Limit Explaination
29:00 - Schedule Map-Reduce Script
29:28 - Schedule Script runs parallely
29:50 - Schedule Script Governance Limit
30:48 - Map-Reduce Script Limits
31:25 - What is Map-Reduce Script