Optimization of input file split

## Background
I have fixed length of 200 bytes file with 100 multi segments present in copybook with 2k columns. It is taking almost 12 hours for just 1gb of file.
## Feature

Can you add feature for input file split in mb for all file formats, currently it is working for record format =VB, where input_split_size_mb

I tried to adjust block size in spark code, but cobrix taking default cluster block size.

## Proposed Solution [Optional]
Solution Ideas
1. Allow this input_split_size_mb for all file formats
2. How to take custom block size specified in spark configuration.
Ex:spark.conf.set(“dfs.blocksize”,”32m”)