Daan MeijerandClaude Fable 5.1
680751e26a
A group now has two lease lanes (migration 6600): `history` works the ranges the bounds hand out, `tail` the tail planner's, each with its own holder, window, snapshot and takeover redo, so a thread on the tail never wades through a group's history and a held group's tail isn't stuck behind it. The edge puts `--tail-threads` (EDGE_TAIL_THREADS, 1 of 2+ by default) of its threads on the tail lane; the group routes take `?lane=`. The lease order within a lane alternates the group with the most planned articles and the longest unheld one. The takeover redo puts back only the lane's ranges the window did after the snapshot, and a group whose last range is held by a holder gone quiet can be taken over. `coordinator:status` prints the catalog's room, the ranges by band, the last hour's rates, the held groups with their snapshots and the phase-2 backlogs. `tests/e2e` runs the real edge-node binary against the node API: the corpus-fill race, a failed stream and the restart that restores the snapshot, a restart without the snapshot file, a takeover (STREAM_CHUNK_WAIT_MINUTES is a setting now). CI builds the binary before the tests. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
28 lines
1.4 KiB
TypeScript
28 lines
1.4 KiB
TypeScript
import { BaseSchema } from '@adonisjs/lucid/schema'
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/**
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* Lease lanes (REBUILD.md, "Voyager 3: window indexing", 1, amended 2026-10-27): a group has two cursors, each with
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* its own holder, window and snapshot. The `history` lane works the ranges the lease bounds hand out (the windows,
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* the history), the `tail` lane the tail planner's (priority at or below the tail's): a thread on the tail never
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* waits behind a group's history, and a held history group's tail isn't stuck behind its days of ranges.
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*/
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export default class extends BaseSchema {
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async up() {
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this.schema.raw(
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`ALTER TABLE group_leases ADD COLUMN lane varchar(8) NOT NULL DEFAULT 'history'`
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)
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this.schema.raw(`ALTER TABLE group_leases DROP CONSTRAINT group_leases_pkey`)
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this.schema.raw(`ALTER TABLE group_leases ADD PRIMARY KEY (group_id, lane)`)
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// Counts the leases handed out: odd and even ones start from the other half of the order's mix.
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this.schema.raw(`CREATE SEQUENCE group_lease_turns`)
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}
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async down() {
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this.schema.raw(`DROP SEQUENCE IF EXISTS group_lease_turns`)
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this.schema.raw(`DELETE FROM group_leases WHERE lane <> 'history'`)
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this.schema.raw(`ALTER TABLE group_leases DROP CONSTRAINT group_leases_pkey`)
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this.schema.raw(`ALTER TABLE group_leases DROP COLUMN lane`)
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this.schema.raw(`ALTER TABLE group_leases ADD PRIMARY KEY (group_id)`)
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}
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}
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