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fix(sessions): serve live projection during historical ingest - #4831
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A synchronous OnceLock wait inside the asynchronous historical-ingest fixture blocked the worker that must poll live projection concurrently. Use a durable async watch latch to preserve release ordering while exercising the real interleaving and supersession journey. Refs #4481
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This was referenced Nov 9, 2026
This was referenced Nov 9, 2026
ScriptedAlchemy
marked this pull request as ready for review
November 9, 2026 23:54
ScriptedAlchemy
changed the base branch from
codex/serialize-lcm-publications
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master
November 10, 2026 03:48
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Give live session projection a turn while historical ingestion is running. A foreground publication can supersede the old candidate, and a background wake preserves the generation still serving readers. The async acceptance fixture releases its worker with a watch notification.
This is the scheduler prerequisite for #4810, stacked on draft #4830. Relative to that base the diff contains only the scheduler and its tests. Its scheduler files match the versions verified on #4810. On the standalone master-based scheduler patch, 66 native Bazel scheduler tests and the real reset-during-refresh acceptance journey passed. The combined stack preserves the separately reviewed per-session compression changes in its base.
Keep the draft hold for independent review.
The current verification run checks
20c8a07a08against #4830 atc914e408d4. This head includes the Linux launcher download prerequisite. The 4-file feature diff has the same paths and stable patch ID after updating the prerequisite.