[poc] FIP-45 Log Enrichment - #4240
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Proof of concept of the revised FIP-45 design: a column group is a shadow log sharing the base log's offsets, the server ships base and group bytes zero-copy, and the client stitches rows by offset. Covers storage, the ProduceLogColumns RPC, gated reads and listOffsets; replication, tiering and Flink are out of scope (see FIP45-POC.md and FIP45-PLAN.md). Claude-Session: https://claude.ai/code/session_01W67Y1fHUSq8K4QN9LQrrmS
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Summary
Proof of concept of the revised FIP-45 design: a column group is a shadow log sharing the base log's offsets, the server ships base and group bytes zero-copy, and the client stitches rows by offset.
FIP45-PLAN.mdrecords the review decisions and work packages, andFIP45-POC.mdlists what is implemented and what is deferred (replication, tiering, Flink, client batching).Test Plan
ColumnGroupLogTest(server) andColumnGroupITCase(client) cover storage, validation, gated and stitched reads, and tablet-server restart. Existing log, replica, projection and scanner suites influss-common,fluss-serverandfluss-clientwere run against the branch.🤖 Generated with Claude Code
https://claude.ai/code/session_01W67Y1fHUSq8K4QN9LQrrmS