Sorting after aggregation in Elasticsearch -

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i have docs structure:

{     field1:string,     field2:         [ {subfield:number}, {subfield:number}...] }

i want sort on result of sum of numbers in field2.subfields:

get myindex/_search {   "size":0,   "aggs": {     "a1": {       "terms": {          "field": "field1",         "size":0       },       "aggs":{         "a2":{           "sum":{             "field":"field2.subfield"           }         }       }     }   } }

if obtain buckets not sorted, want buckets sorted "a2" value. how can this? thank you!

you had it. need add order property a1 terms aggregations, this:

get myindex/_search {   "size":0,   "aggs": {     "a1": {       "terms": {          "field": "field1",         "size":0,         "order": {"a2": "desc"}      <--- add       },       "aggs":{         "a2":{           "sum":{             "field":"field2.subfield"           }         }       }     }   } }

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