CRITICAL FIX v4.10.3: The v4.10.2 release only fixed VFS initialization but missed the
underlying file corruption bug. During concurrent bulk imports, files were being truncated
because writes were not atomic.
Changes:
1. saveNode() - Added atomic temp+rename pattern for HNSW JSON files (line 252)
2. writeObjectToPath() - Added atomic temp+rename for compressed/uncompressed metadata (line 654)
3. saveEdge() - Added atomic temp+rename for verb JSON files (line 461)
This prevents the Workshop team's reported errors:
- SyntaxError: Unexpected end of JSON input (HNSW files truncated)
- Error: unexpected end of file (compressed metadata truncated)
All file write operations now use atomic temp file + rename sequence:
1. Write to temp file with unique timestamp + random suffix
2. Atomic rename temp → final (OS-level atomicity guarantee)
3. Clean up temp file on error
This matches the atomic pattern already added to saveHNSWData() in v4.10.1,
but now applied consistently across ALL file write operations.
David Snelling
a0fe8f00d2