Description
Description:
This change introduces new builtin variables $$NOW and $$CLUSTER_TIME and we need the documentation.
Scope of changes
For this ticket, will just add to the
- 4.2 rel notes
- aggregation-variable page
We currently use $$NOW in the replaceRoot page, but a wholesale vetting of various pipeline examples to use these variables will be done as part on a different ticket.
Future work in July
Vet examples to use these variables.
Impact to Other Docs
MVP (Work and Date)
Resources (Scope or Design Docs, Invision, etc.)
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