MemPalace/mempalace · error · RebuildPartialError

Upsert failed in collection {collection_name!r} after {upser

Error message

Upsert failed in collection {collection_name!r} after {upserted} rows: {exc!r}

What it means

Error "Upsert failed in collection {collection_name!r} after {upserted} rows: {exc!r}" thrown in MemPalace/mempalace.

Source

Thrown at mempalace/repair.py:1458

        _flush()
    except Exception as exc:  # noqa: BLE001 — chromadb raises many shapes
        partial = dict(counts_so_far)
        partial[collection_name] = upserted
        msg_parts = [
            f"Upsert failed in collection {collection_name!r} after {upserted} rows: {exc!r}",
            f"Partial palace left at: {dest_palace}",
        ]
        if archive_path is not None:
            msg_parts.append(f"Original palace archived at: {archive_path}")
            msg_parts.append(
                "  Recover by removing the partial dest and re-running with "
                f"--source {archive_path}"
            )
        else:
            msg_parts.append("  Source palace is unchanged. Remove the partial dest and re-run.")
        message = "\n  ".join(msg_parts)
        print(f"\n  ERROR: {message}")
        raise RebuildPartialError(
            message,
            partial_counts=partial,
            failed_collection=collection_name,
            dest_palace=dest_palace,
            archive_path=archive_path,
        ) from exc

    return upserted


def extract_via_sqlite(palace_path: str, collection_name: str) -> Iterator[tuple[str, str, dict]]:
    """Yield ``(embedding_id, document, metadata)`` for every row in
    ``collection_name``'s metadata segment by reading ``chroma.sqlite3``
    directly.

    Bypasses the chromadb client entirely — never opens a
    ``PersistentClient``, never imports hnswlib, never invokes the
    HNSW segment writer. This is the recovery path for palaces where

View on GitHub (pinned to 06cb6987f0)

Solutions

1. Inspect the underlying upsert error; the partial batch was already applied, re-run to continue

When it happens

Trigger: Thrown at mempalace/repair.py:1458 when the library encounters an invalid state.

Common situations: Upsert failed mid-batch during repair re-upload.

AI-assisted analysis of MemPalace/mempalace@06cb6987f0 (2026-08-15). Data as JSON: /api/errors/45020fa1ade2bb79. Report an issue: GitHub.