Can we get sum of original bucket (all aggregation result) data from elasticsearch aggregation without showing all bucket result? I'm using elasticsearch 2.2.

Ex: this is the original result of original query (just to make it simple)

`{ "bucket": [ { "key": "a", "val": 10 }, { "key": "b", "val": 10 }, { "key": "c", "val": 10 } ], "sum_of_val": 30 }`

And this is what I want

`{ "bucket": [ ], "sum_of_val": 50 }`

Given that the bucket not showing all the results bucket, but sum_bucket gives the actual sum of result bucket.

I can get the sum of all aggregation, but I need to include all the buckets. This will take a long time to transfer the result, because the result is too big and since my data also big.