A developer has a failing MemPalace write path and needs a safe recovery path, not a generic ChromaDB article.
Troubleshooter for mempalace ChromaDB compaction error
MemPalace ChromaDB compaction error triage
Triage MemPalace ChromaDB compaction failures, including Rust u64 and SQL BLOB mismatch symptoms, before touching the store.
The public results are mostly repository, issue, and forum context. A focused repair console can turn that evidence into a safe workflow.
Paste the failing log and instantly see the risk class, probable storage layer, and the first backup command to run.
Repair path
Likely cause, backup-first repair sequence, and verification checklist. This page is built for a developer who already has a MemPalace symptom and needs a safe next move.
- Capture the exact write-tool error, database path, MemPalace version, Python version, and backend store type.
- Snapshot the current store before running compaction, migration, or prune commands.
- Check for ChromaDB metadata type mismatches, interrupted compaction, and cross-process writes.
- Run verification with a read-only search before allowing new memory writes.
Sample signal
ChromaDB compaction error: Rust type u64 cannot map to SQL type BLOB while mempalace_diary_write fails.
The full console stores the selected environment, likely cause, open risks, and planned verification checks as a proof receipt for team handoff.