sub aggregation of metric aggregation

[zijian1981]

Is it possible to support sub aggregation of metric aggregation ?
For example ,term agg→mean agg →max agg

[colings86]

What would you expect the output of this to be? if you want to calculate the mean and max of a field for each terms bucket you can do the following:

{
  "aggs": {
    "terms_agg": {
      "terms": {
        "field": "category",
        "size": 10
      },
      "aggs": {
        "mean_agg": {
          "avg": {
            "field": "value"
          }
        },
        "max_agg": {
          "max": {
            "field": "value"
          }
        }
      }
    }
  }
}

Does this fit what you wanted to do?

[zijian1981]

No,i want to calculate the max value from all the mean value

[markwalkom]

You cannot do this at this stage. Once you get an aggregation result you can only sub-aggregate that, not do a different aggregation across those results.

[colings86]

@zijian1981 there is an issue open for this kind of thing (#10000) which is being considered as part of #9876

[colings86]

Closing in favour of #10000 and #9876