Checking if updated documents are visible to search

[RainTown (Kevin Maguire)]

Parallel discussion on SOF and here!

@dadoonet

As you are holding a temporal list of inserted documents on your side you can also _search for the latest document every x seconds and once the number of hits is 1, you can assume that the _refresh has happened.

You can only assume a _refresh has happened on at least one shard. This is effectively same as this observation

@Mo_B

Searching for a document and finding the up-to-date version doesn’t guarantee that a subsequent search is not routed to a replica shard that still holds a stale version.