Errror while inserting large data >2Million (Lost contact with Snaplex node)

Hello, can someone please help in my case. I am facing the same issue Solved: Lost contact with Snaplex node - SnapLogic - Integration Nation - 13537, due to large vol of data and I did not quite get how to implement it in my pipeline? Where do I add these mappers described in the solution? I am attaching some screenshots herewith. So basically, my child pipeline reads from s3uri passed from parent pipeline, reads the content and inserts the data into the respective tables. Also attaching the pipeline

Note: if the data is less than 2 million, the inserts are happening fine

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