Elasticsearch 7 Quick Start Guide

Bucket script aggregation

This is a parent pipeline type aggregation that executes a script. The script can be performed on each bucket, on specified metrics in the parent multi-bucket aggregation. It has the following syntax:

{  "bucket_script": {    "buckets_path": {    "my_var1": "the_sum",    "my_var2": "the_value_count"  }, "script": "params.my_var1 / params.my_var2"  }}

It takes the following parameters:

• script: The script to be run on the aggregation
• buckets_path: The map of script variables and the associated bucket paths
• gap_policy: The policy to be taken when there are gaps in the database
• format: The type of format the output value will have