CODEWITHSUNDEEP
elasticsearch
lukewm
lukewm

Reputation: 21723

Elasticsearch Multi Get with Aggregation

Can you use the Multi Get API with aggregation/facets?

For example, if I store documents called Shapes and I have 500 shape_ids, each shape has a side_count and I'd like to find out the average side_count of that list of shape_ids.

Upvotes: 2

Views: 954

Answers (1)

javanna
javanna

Reputation: 60245

A get request is very different compared to a search request. A get doesn't imply any query as given index, type and id (or routing) of a document we know where it is (which shard), thus the document is retrieved from the interesting shard and returned. Multi get is just a variation that does the same with multiple documents, in a more optimized way as it groups get requests per shards, minimizing the network roundtrips. Note also that get is real-time, as documents can either be retrieved from the lucene index or from the elasticsearch transaction log if not available yet for search.

Aggregations require a search request and cannot be run on top of documents returned by get requests. You might be able to achieve the same result though using the search api and the ids filter instead of the multi get.

Upvotes: 2

Related Questions