javascript
MongoDB $lookup from sharded collection limitation
MongoDB.*\$lookup.*from.*sharded collection.*not supported
Fixes
- 1.$lookup target collection must be unsharded (or use $lookup with pipeline in 5.1+)
- 2.Denormalize data to avoid cross-shard lookups
- 3.Use client-side joins for sharded-to-sharded lookups
mongodbaggregationsharding
Related Errors
javascript3 fixes
Cannot read property of undefined
Cannot read propert(y|ies) of undefined
- •Add optional chaining (?.)
- •Check if object exists before accessing
javascript3 fixes
Cannot read property of null
Cannot read propert(y|ies) of null
- •Add null check before access
- •Use optional chaining (?.)
javascript3 fixes
TypeError: X is not a function
is not a function
- •Check spelling of method name
- •Verify import is correct