Top hits aggregation default sort

Elastic Stack Elasticsearch
2

Hi Dan,

The buckets of there replies terms agg are sorted by default by their doc
count, but the hits inside topChildren agg are sorted by default by the
score of the query.
I think if you sort the replies buckets by highest score you get what you
want. In order to do this you need to define a max metric agg, that keeps
track of the score and let the replies terms agg sort its buckets by that,
similar to what is done in this example:

Martijn

On 18 August 2014 23:52, Dan Tuffery dan.tuffery@gmail.com wrote:

I using the top hits aggregation with a has_child query. In the top_hits
aggregation documentation it says 'By default the hits are sorted by the
score of the main query', but I'm not seeing that in the results for my
query

{
"from": 0,
"size": 3,
"query": {
"has_child": {
"score_mode": "max",
"type": "child_type",
"query": {
"match": {
"myField": {
"query": "some text"
}
}
}
}
},
"aggs": {
"replies": {
"terms": {
"field": "parent_type_id",
"size": 3
},
"aggs": {
"topChildren": {
"top_hits": {
"size": 1
}
}
}
}
}
}

the has_child query returns three parent results with the following scores.

  • doc 1 = 0.83619833
  • doc 2 = 0.7210085
  • doc 3 = 0.7210085

The score for the top hits aggregations are:

  • first top hit aggregation = 0.29160267
  • second top hit aggregation = 0.83619833
  • third top hit aggregation = 0.58320534

So the 'second top hit aggregation' should be returned first followed with
aggregations with the score 0.7210085?

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Met vriendelijke groet,

Martijn van Groningen

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