[Kernel] Support getting the version and snapshot with atOrAfter and beforeOrAt semantics #2679
Description
Feature request
Which Delta project/connector is this regarding?
- Spark
- Standalone
- Flink
- Kernel
- Other (fill in here)
Overview
#2662 adds support for reading a snapshot of the table with beforeOrAt semantics (which aligns with SQL TIMESTAMP AS OF time-travel semantics).
Delta-sharing and others require additional semantics to support other use-cases (i.e. streaming)
- afterOrAt semantics
- Retrieving just the table version without constructing the snapshot (to avoid unnecessary loading of the table protocol and metadata) for both semantics
Further details
This includes revisiting the API added in #2662 and deciding what the API surface should look like for all of these time-travel related methods.