In some cases the source files are in Parquet format (binary) and need to be converted to CSV text format in order to read them as part of a process flow. Use the attached converter in a Native Call and run the converter to convert parquet files into text files in a folder.
Example showing how to run the exe in command line:
c:\data\parquet>ParquetToCSV.exe trendmicroEvents.parquet trendmicro.csv
Link to download exe.