Critical bugfix: ChromaSync now properly cleans up chroma-mcp subprocesses
when the worker is restarted, preventing memory exhaustion from orphaned
processes accumulating over time.
Changes:
- Store reference to StdioClientTransport subprocess
- Explicitly close transport in close() method to kill subprocess
- Add error handling to ensure cleanup even on failures
- Reset all state in finally block
Problem:
Each worker restart spawned a new chroma-mcp process but never killed the
old one. After multiple restarts, orphaned processes accumulated (16+ seen
in production), consuming 900MB+ RAM and eventually causing OOM kills that
silently failed backfills.
Impact:
- Eliminates process accumulation
- Prevents memory exhaustion from leaked subprocesses
- Fixes silent backfill failures caused by OOM kills
- Ensures graceful cleanup on worker shutdown
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Alex Newman
6d4a4819de