Dear Polaris Community, Over the few weeks, Polaris Persistence under-went major refactor to get rid of the transactional dependencies and completely adopt CAS semantics (Compare and Swap), simplifying the schema.
As a result I am pleased to announce the new JDBC implementation which is considerably faster, more scalable, simpler in schema and highly configurable, is now ready and a new default for the persistence layer. We ran the concurrency benchmarks <https://docs.google.com/document/d/1RLYaAtNUkgNW3Ef7-BWfF_8RkSK7B7oR/edit#bookmark=id.von5ayuoga6> conducted / contributed in April this year, with JDBC persistence and we see a 100% success rate compared to roughly ~0% success rate with the previous default eclipse link, with consistent p90's (< 50 ms) on mixed workloads. You can learn more about configuration and tuning in the: Relation JDBC Section <https://polaris.apache.org/in-dev/unreleased/metastores/>. Cheers, Prashant Singh
