Ballista 0.2.330 Apr 2020
This release contains the following improvements to the JVM query engine:
- The CSV data source is now much faster due to some simple optimizations being implemented. As a result of these improvements, the JVM executor now has similar performance to the Rust and Spark executors for an aggregate query against one month’s worth of NYC Taxi data.
CASTexpression is now supported for casting between numeric and string data types.
This release also contains the following improvements:
- The Rust integration test now runs the same aggregate query against all three executors (JVM, Rust, Spark) and they all produce identical results.
- A packaging issue was resolved that was preventing Java artifacts from being published to Maven Central.