Elasticsearch: aggregation accuracy

Question

If I am running an aggregation against a query - will the results be accurate? Is the doc_count inaccurate only when there is no query? aggregation accuracy

bittusarkar · Accepted Answer · 2014-08-22 18:55:35Z

1

To get accurate aggregation document count, you can explicitly set the size parameter to 0. See this for more information. But mind you, this is more expensive.

answered Aug 22, 2014 at 18:55

bittusarkar

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5 Comments

Roxana Over a year ago

so, by default, if I have an aggregation ran against a query and specify the size, then I can get results that are not accurate?

bittusarkar Over a year ago

Yes. This is very nicely explained at elasticsearch.org/guide/en/elasticsearch/reference/current/….

Roxana Over a year ago

that is the same link I gave in my question - but there is the plain aggregation. would it be the same behavior if the aggregation is 'activated' in the context of a query?

bittusarkar Over a year ago

What do you mean by "aggregation activated in the context of a query"? Can you explain with a simple example please?

Roxana Over a year ago

{query: {some query}, aggs{}}

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