Another SQL engine on data lake that heavily uses arrow is Dremio. https://www.dremio.com/webinars/apache-arrow-calcite-parquet-relational-cache/ https://www.d

Another SQL engine on data lake that heavily uses arrow is Dremio. https://www.dremio.com/webinars/apache-arrow-calcite-parquet-relational-cache/ https://www.dremio.com/webinars/apache-arrow-calcite-parquet... https://github.com/dremio/dremio-oss https://github.com/dremio/dremio-oss If you have parquet on S3, using an engine like Dremio (or any engine based on arrow) can give you some impressive performance. Key innovations in OSS on data analytics/data lake: Arrow - Columnar in memory format; Gandiva - LLVM based execution kernel; Arrow flight - Wire protocol based on arrow; Project Nessie - A git like workflow for data lakes https://arrow.apache.org/ https://arrow.apache.org/. https://arrow.apache.org/docs/format/Flight.html https://arrow.apache.org/docs/format/Flight.html. https://arrow.apache.org/blog/2018/12/05/gandiva-donation/ https://arrow.apache.org/blog/2018/12/05/gandiva-donation/ https://github.com/projectnessie/nessie https://github.com/projectnessie/nessie