accessing parent metric in buckets.

[Shivacharangoud]

Describe the bug

sample data:
POST sales_data/_bulk
{ "index": { "_id": 1 } }
{ "category": "electronics", "sales": 200 }
{ "index": { "_id": 2 } }
{ "category": "electronics", "sales": 100 }
{ "index": { "_id": 3 } }
{ "category": "furniture", "sales": 150 }
{ "index": { "_id": 4 } }
{ "category": "furniture", "sales": 200 }
{ "index": { "_id": 5 } }
{ "category": "clothing", "sales": 50 }
{ "index": { "_id": 6 } }
{ "category": "clothing", "sales": 100 }
{ "index": { "_id": 7 } }
{ "category": "electronics", "sales": 300 }
{ "index": { "_id": 8 } }
{ "category": "furniture", "sales": 250 }
{ "index": { "_id": 9 } }
{ "category": "clothing", "sales": 150 }

query:

GET sales_data/_search
{
"size": 0,
"aggs": {
"total_sales": {
"sum": { "field": "sales" }
},
"sales_per_category": {
"terms": {
"field": "category.keyword",
"size": 10
},
"aggs": {
"category_sales": {
"sum": { "field": "sales" }
},
"sales_percentage": {
"bucket_script": {
"buckets_path": {
"categorySales": "category_sales",
"totalSales": "../total_sales"
},
"script": "params.categorySales / params.totalSales*100"
}
}
}
}
}
}

and the response from opensearch:
{
"error": {
"root_cause": [
{
"type": "action_request_validation_exception",
"reason": "Validation Failed: 1: No aggregation found for path [../total_sales];"
}
],
"type": "action_request_validation_exception",
"reason": "Validation Failed: 1: No aggregation found for path [../total_sales];"
},
"status": 400
}

iam trying to access the total_sales inside each bucket to that i can perform percentage of sales in each bucket per total sales.but iam getting and error as shown above. is there any solutions for this?

Related component

No response

To Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

iam expecting percentage of sales in each category.

Additional Details

• OS: aws opensearch
• Version 2.1