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Check-in [363ee3b9df]

Overview
Comment:fix(cli): hold the write lock from snapshot's read of the tip to its commit

Under -tags test_ncruces, TestSnapshotConcurrentProcesses failed 8 of 20 runs. Besides the open-time lock error fixed in db, a snapshot read the tip's manifest outside any transaction while another process's check-in re-deltaed it, and failed with a hash mismatch. A snapshot now runs in one bound write transaction from the read of the tip to its commit, so no other check-in can land in between; the optimistic retry loop it replaces is gone.

Timelines: family | ancestors | main | trunk | feat/cli-snapshot
Files: files | file ages | folders
SHA3-256: 363ee3b9dfde61b3f38b6ed0ba5bdca42c581535c5ce7580976a103d990896a2
User & Date: [email protected] on 2026-10-19 23:13:12.000
Other Links: branch diff | manifest | tags
Context
2026-10-19
23:13
fix(cli): hold the write lock from snapshot's read of the tip to its commit

Under -tags test_ncruces, TestSnapshotConcurrentProcesses failed 8 of 20 runs. Besides the open-time lock error fixed in db, a snapshot read the tip's manifest outside any transaction while another process's check-in re-deltaed it, and failed with a hash mismatch. A snapshot now runs in one bound write transaction from the read of the tip to its commit, so no other check-in can land in between; the optimistic retry loop it replaces is gone. leaf check-in: 363ee3b9df user: [email protected] tags: feat/cli-snapshot, main, trunk

23:10
fix(db): set busy_timeout before any other pragma on open

The drivers build the DSN's _pragma parameters from a map and run them in that order, so journal_mode or foreign_keys often ran before busy_timeout. An open while another process held a lock then failed at once with "database is locked" instead of waiting: one cause of TestSnapshotConcurrentProcesses failing under -tags test_ncruces. check-in: 69c95d4419 user: [email protected] tags: feat/cli-snapshot, main, trunk

Changes