Environment
- MongoDB 7.3.0-alpha1
- Single node replica set
- macOS
Happened to observe that a new 10MB FTDC file was being rolled every 8 minutes instead of the more typical 4-8 hours.
Based on some internal discussion this is thought to be caused by frequent schema changes brought on by a separate memory optimization.
This is apparently trivially reproducible on linux. Example logs from a linux repro:
"full-time diagnostic data capture schema change: field name change","attr":{"from":"block-manager","to":"cursor"}} "full-time diagnostic data capture schema change: field name change","attr":{"from":"cursor","to":"block-cache"}}
- is caused by
-
SERVER-80290 Change WiredTigerUtil::exportTableToBSON to use StringMap
- Closed
- related to
-
SERVER-85654 Create test to prevent FTDC compression loss
- Open