kernel meetings notes 2025-04-03

[zachschuermann]

Summary

0.9.0 delayed (EOW), a number of breaking changes (and non-breaking! - v2checkpoint reads)

ongoing threads

• IN/NOT IN PR to merge @roeap
• predicate/expressions split @scovich (putting up a bunch of stacked commits - top-level feedback)
• merge opaque expressions @scovich
• merge IN/NOT IN deprecation @zachschuermann
• snapshot incremental API: Snapshot::try_new_from(Arc<Snapshot>) -> Arc<Snapshot> about to merge @zachschuermann
• @hntd187 targeting CDF reads, need timestamp work

Attendees

@hntd187 @zachschuermann @roeap @scovich @mightyshazam

notes stream

• going over open threads
• top-level feedback for ryan's on first 2-3 commits feat!: Split out predicates as different from expressions #775
• steve has PR for typed features: refactor!: adopt types for table features #684
• sebastians prefactors for checkpoint writes
• 0.9.0 after breaking changes land (steve)
• do our own object_store interface: clickhouse + kyjah ask