tree 2dd153555e1f977c8cbf20ace7d21ea2bc3b066f
parent b37c43e5148228b309166d71080b5125faae85cc
author Benedict Elliott Smith <benedict@apache.org> 1706261740 +0000
committer Benedict Elliott Smith <benedict@apache.org> 1709113626 +0000

Fast single-partition "Ephemeral Reads"

Introduce a special kind of non-durable read that provides only per-key linearizable isolation; i.e. strict-serializable isolation for single partition-key reads.
This read creates only a happens-before edge, by collecting dependencies for execution and ensuring that execution happens strictly after these dependencies
have executed, but at no precise time otherwise. So later writes may be witnessed, and if multiple keys are read they may represents different points in time.

patch by Benedict; reviewed by Ariel Weisberg for CASSANDRA-19305