high severityLanceDB (lancedb Python/Rust/JS SDKs)
WARN lance_table::io::commit] Using unsafe commit handler. Concurrent writes may result in data loss. Consider providing a commit handler that prevents conflicting writes. (data corruption/loss on concurrent writes)
Root cause
Cloud object storage (S3-compatible) lacks atomic "rename if not exists" operations required for LanceDB's default commit handler, allowing concurrent writes to conflict and corrupt data or cause loss.
LanceDBlancedb.connectS3DynamoDBcommit handlerdata lossMVCC