Stephen0421 opened a new pull request, #9148: URL: https://github.com/apache/paimon/pull/9148
## Summary First PR in the stacked series for #9099. Shared descriptor-byte parsing and read/write foundations for managed BLOB v1/v2 compatibility — no PK-specific logic. - **Parsing API (`blob.py`)**: `from_bytes` (v2 magic heuristic) vs `from_descriptor_bytes` (v1 strict + v2 deserialize with optional trailing padding) - **Batch read**: `BlobInlineConvertReader` uses `from_descriptor_bytes` for descriptor fields - **Row read**: `descriptor_field_indices` when `blob-as-descriptor=true` → `OffsetRow.get_blob()` uses `from_descriptor_bytes` - **Config**: legacy `blob.stored-descriptor-fields`; blank `blob-descriptor-field` treated as unset - **Write**: `blob_format_writer` rejects truncated copies (`EOFError`) when descriptor length is known - **URI lifecycle**: `UriReaderFactory` owned FileIO tracking; `clear_cache()` without LRU double-close; FileIO `close()` wiring ## Behavior changes (intentional) - Descriptor columns: malformed bytes → `ValueError` (was silent `BlobData` passthrough) - `blob-descriptor-field=""` + legacy set → now falls back to `blob.stored-descriptor-fields` - `from_bytes` on arbitrary inline payload → unchanged (`BlobData`; v2-only heuristic) ## Test plan - [x] `BlobTest` - [x] `UriReaderFactoryTest` - [ ] CI green ## Follow-ups - PR2: managed BLOB lifecycle + staged commit - PR3: PK managed BLOB write - PR4: PK managed BLOB read/view - PR5: dynamic bucket HASH callback Related: #9099 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
