-
Type: Task
-
Resolution: Unresolved
-
Priority: Minor - P4
-
None
-
Affects Version/s: None
-
Component/s: None
-
None
-
Query Execution
In SERVER-64482 Make SBE $lookup aware of collation, we found $lookup has an internal parameter _internalCollation and we decided to not push down $lookup to SBE when this parameter is present in PM-2449.
This ticket is a placeholder/reminder for us to see how do we handle this in SBE when we make more progress deprecating the classic engine.
This _internalCollation parameter was introduced in SERVER-53637 for resharding. As part of the resharding effort we need to run a pipeline with the collection’s default collation, but then use the simple collation for a specific comparison concerning the chunk boundaries.
- is related to
-
SERVER-53637 Allow collation to be specified for a $lookup sub-pipeline
- Closed
-
SERVER-64482 Make SBE $lookup aware of collation
- Closed