Issues Fixed:
4️⃣ data_processor.py (Line 230-232):
- Second update_log_progress call without commit after data preparation
- Added commit() after completion update to prevent deadlock
- Added debug logging for visibility
5️⃣ prophet_manager.py _store_model (Line 750):
- Created TRIPLE nested session (training_service → trainer → lock → _store_model)
- Refactored _store_model to accept optional session parameter
- Uses parent session from lock context instead of creating new one
- Updated call site to pass db_session parameter
Complete Session Hierarchy After All Fixes:
training_service.py (session)
└─ commit() ← FIX#2 (e585e9f)
└─ trainer.py (new session) ✅ OK
└─ data_processor.py (new session)
└─ commit() after first update ← FIX#3 (b2de56e)
└─ commit() after second update ← FIX#4 (THIS)
└─ prophet_manager.train_bakery_model (uses parent or new session) ← FIX#1 (caff497)
└─ lock.acquire(session)
└─ _store_model(session=parent) ← FIX#5 (THIS)
└─ NO NESTED SESSION ✅
All nested session deadlocks in training path are now resolved.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Root Cause:
After fixing the training_service.py deadlock, training progressed to
data preparation but got stuck there. The data_processor.py creates
another nested session at line 143, updates training_log without
committing, causing another deadlock scenario.
Session Hierarchy:
1. training_service.py: outer session (fixed in e585e9f)
2. trainer.py: creates own session (passes deadlock due to commit)
3. data_processor.py: creates ANOTHER nested session (THIS FIX)
Fix:
Added explicit db_session.commit() after progress update in data_processor
(line 153) to ensure the UPDATE is committed before continuing with data
processing operations that may interact with other sessions.
This completes the chain of nested session fixes:
- caff497: prophet_manager + hybrid_trainer session passing
- e585e9f: training_service commit before trainer call
- THIS: data_processor commit after progress update
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
