Enrich index with data found in another index

Elastic Stack Elasticsearch
1

Hello,

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

2

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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