[chrisjc]

"Presto is an open-source distributed SQL query engine optimized for low-latency, ad-hoc analysis of data. It supports the ANSI SQL standard, including complex queries, aggregations, joins, and window functions. Presto can process data from multiple data sources including the Hadoop Distributed File System (HDFS) and Amazon S3"

TIL that Presto is available in EMR.

[ztjio]

Not only that, but, AWS Athena is basically serverless Presto. It's an extremely handy tool particularly if you've got structured or semi-structured data being dumped into S3 and you want a near zero maintenance (only have to create schemas) way to explore it.