Ask HN: Is there an open source database like this?

1. Has multi-group Raft like CockroachDB.

2. Can be columnar and supports SIMD vectorized queries.

3. Has many useful indexes like bitmap, skip list, & full text inverted index.

4. Separate compute & storage. It stores cold data on blob stores like S3. Even better if the compute is serverless.

5. Can query external tables stored in Iceberg, similar to Trino.

6. You can perform all these in a nice unified SQL dialect.