Scripted histogram facets

Elastic Stack Elasticsearch
1

Hi everyone,

I'm trying to figure out how to do an histogram facet :

{
"query" : {
"match_all" : {}
},
"facets" : {
"histo1" : {
"histogram" : {
"field" : "field_name",
"interval" : 100
}
}
}
}

where the field is, in fact, the substraction of two fields.

I have a native script that works wonder for a terms facet, but I can't
seem to find how I should apply it for an Histogram facet.
A terms facet return too many differentes results.

I could, In the native script, create the buckets myself and use a tems
facet anyway (thus mimicking an histogram), but it seems an ugly way to
achieve what I want (and maybe a bit expensive..I think).

I'd prefer using an Histogram facet, as that's what they are here for.

Is it possible? Did I miss something?

Any infos on the matter would be tremendously useful.
Thanks.

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2

I don't know much about facets, but the new histogram aggregation supports
scripts, maybe you can try it out?

On Tue, Dec 2, 2014 at 2:49 PM, DH ciddp195@gmail.com wrote:

Hi everyone,

I'm trying to figure out how to do an histogram facet :

{
"query" : {
"match_all" : {}
},
"facets" : {
"histo1" : {
"histogram" : {
"field" : "field_name",
"interval" : 100
}
}
}
}

where the field is, in fact, the substraction of two fields.

I have a native script that works wonder for a terms facet, but I can't
seem to find how I should apply it for an Histogram facet.
A terms facet return too many differentes results.

I could, In the native script, create the buckets myself and use a tems
facet anyway (thus mimicking an histogram), but it seems an ugly way to
achieve what I want (and maybe a bit expensive..I think).

I'd prefer using an Histogram facet, as that's what they are here for.

Is it possible? Did I miss something?

Any infos on the matter would be tremendously useful.
Thanks.

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Adrien Grand

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3

Hi, and thanks for the reply.

I should have said that, for reasons I (sadly) have no power over, I'm
stuck with ES v0.90.5, and thus don't get to use those impressives
aggregations.
I'm beginnig to think that the only way of doing what I want is indeed
using a native script that will carve my buckets for me.
Thanks, anyway !

Le mardi 2 décembre 2014 14:49:40 UTC+1, DH a écrit :

Hi everyone,

I'm trying to figure out how to do an histogram facet :

{
"query" : {
"match_all" : {}
},
"facets" : {
"histo1" : {
"histogram" : {
"field" : "field_name",
"interval" : 100
}
}
}
}

where the field is, in fact, the substraction of two fields.

I have a native script that works wonder for a terms facet, but I can't
seem to find how I should apply it for an Histogram facet.
A terms facet return too many differentes results.

I could, In the native script, create the buckets myself and use a tems
facet anyway (thus mimicking an histogram), but it seems an ugly way to
achieve what I want (and maybe a bit expensive..I think).

I'd prefer using an Histogram facet, as that's what they are here for.

Is it possible? Did I miss something?

Any infos on the matter would be tremendously useful.
Thanks.

--
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