elasticsearch-js/docs/reference/api/AggregationsRandomSamplerAggregation.md

Interface AggregationsRandomSamplerAggregation

Name	Type	Description
probability	double	The probability that a document will be included in the aggregated data. Must be greater than 0, less than 0.5, or exactly 1. The lower the probability, the fewer documents are matched.
seed	integer	The seed to generate the random sampling of documents. When a seed is provided, the random subset of documents is the same between calls.
shard_seed	integer	When combined with seed, setting shard_seed ensures 100% consistent sampling over shards where data is exactly the same.