How to Convert CSV and Log Files to a Columnar Format Share August 11, 2020 Dm4r Technology Columnar formats, such as Apache Parquet, offer great compression savings and are much easier to scan, process, and analyze than other formats such as CSV. In this article, we show you how to convert your CSV data to Parquet using AWS Glue. Read This Article on CloudSavvy IT › Source : How to Convert CSV and Log Files to a Columnar Format