mongos (sharding router) crashes frequently under load

8/10 High

The mongos routing layer is unreliable and crashes every few hours to days under load. Some crashes involve assertion failures that don't fully terminate the process, leaving it in a broken state even with restart supervision.

MongoDB
Category
deploy
Workaround
hack
Stage
deploy
Freshness
persistent
Scope
single_lib
Upstream
stale
Recurring
Yes
Buyer Type
enterprise
Maintainer
slow

Sources

Collection History

Query: “What are the most common pain points with MongoDB for developers in 2025?”4/4/2026

mongos is unreliable. Under load, it crashed anywhere from every few hours to every few days. Restart supervision didn't always help b/c sometimes it would throw some assertion that would bail out a critical thread, but the process would stay running.

Created: 4/4/2026Updated: 4/4/2026