A simple C++ program to perform line-based partitioning of files. Nothing fancy, but does the job just fine and supports several options detailed below! The header file FilePartitioner.hpp contains all the partitioning functions, the source file main.cpp is just a small wrapper to parse command line input. The program was tested on Linux with GCC 5.4 and Windows with MinGW 5.3.

You can compile the program with a command similar to the following:

g++ -std=c++11 -O3 -o FilePartitioner src/main.cpp src/FilePartitioner.hpp

Once compiled, the input of the program must have the following form:

file-location destination-folder partitioning-mode number-of-partitions

• file-location: location of the file to partition. Any line-based text file will work (.txt files, .csv files, etc.).
• destination-folder: must point to an existing folder in your file system; the output files will have the same name as the input one, with an additional suffix corresponding to the partition number.
• partitioning-mode
  • rr for round-robin partitioning, each partition receives a line from the input file in turn.
  • ln for linear partitioning, each partition receives one chunk of the input file.
  • rd for random partitioning, each partition receives randomly selected lines from the input file (will most likely not give equally sized partitions).
• number-of-partitions: number of partitions to create from the input file.

For instance, on Linux:

./FilePartitioner data/myFile.csv data/ rr 8

Have fun partitioning your files!