We have a production cluster that is replicated by XDCR to another cluster (for backup, DR, reporting, etc.). The replica is not modified independently.
Can we build N1QL indexes (CREATE INDEX) on the replica cluster that are not in the production cluster, and similarly can we drop these indexes?
Side question (yes I know it depends on hardware), what is the order of magnitude (seconds, minutes, hours) wall-clock time for creating an index on a bucket with ~100,000,000 complex documents.