Enrich index with data found in another index


What is the best way to add a field to an existing indexm where the value is filled with data from an other index.

E.g. most commont example you have an index with a name field amd you want to add an email address. This email address can be found in an other index.

Is reindex with a painless script an option, a script that updates or is an enrich pipeline the best option?

KR Henk

An enrich processor is your best bet for adding an email address from another index to the existing index.

An example for this specific scenario is found in the docs here.

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