Minor Description
Currently its not possible to determine how much the AsyncIndexUpdate is lagging behind in the indexing state i.e. its not possible to determine upto what time the repository state has been indexed. It would be helpful to expose this information such that a system admin can determing how much of recently added data is not indexed.
This information can be determined by also storing the timestamp when a checkpoint is created as AsyncIndexUpdate would have indexed repository state upto that time