Main main index (say, countries) has a field CountryId,
At the time of indexing I would to grab details about this country from another index (say, population-data) and store in the main index.
So if i
CountryId : "33"
Is there a way to setup pipeline to fetch Population and States field data from population-data index and Store it in main index. Assuming both index have document with CountryId:33?
The desired doucument to be indexed is
CountryId : "33",