Error
Error Code:
315
MongoDB Error 315: Replica Set Member Too Stale
Description
Error 315, 'Too Stale To Sync From Source,' indicates a critical issue within a MongoDB replica set where a secondary member has fallen too far behind its primary. The secondary's oplog is missing operations necessary to catch up, making it unable to sync and apply new changes from the source.
Error Message
Too Stale To Sync From Source
Known Causes
4 known causesSmall Oplog Configuration
The oplog (operation log) on the primary is too small to retain the necessary history for a lagging secondary to catch up, leading to overwritten operations.
Prolonged Secondary Downtime
A secondary member was offline or unreachable for an extended period, causing it to miss many operations and fall significantly behind the primary.
High Write Volume
A sudden or sustained high write workload on the primary can cause the oplog to advance very quickly, making it difficult for a lagging secondary to keep pace.
Network Latency or Bottleneck
Poor network connectivity, high latency, or low throughput between replica set members can prevent timely replication, causing secondaries to lag excessively.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service