ES FILTERED QUERY filers first with terms (cheap) and then match(expensive), or otherwise?

So I suppose that when I run a filtered query like this one, ES filters all
the documents in the database, and then performs the match query only to
the documents that fit the filter, right? I just want to make sure that it
doesn't perform the match query on all the documents and the drop the ones
that don't fit the filter, because that would be a total waste of resources
as I'm only interested on a small portion of the documents.

{
"query" : {
"filtered" : {
"query": {
"match": {
"field1": "whatever"
}
},
"filter" : {
"term" : {
"field2" : 10
}
}
}
}
}

Thanks for clarifying this!

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Yup

On Wednesday, January 28, 2015 at 12:46:58 AM UTC+1, Gabriel Gavilan
gavilán wrote:

So I suppose that when I run a filtered query like this one, ES filters
all the documents in the database, and then performs the match query only
to the documents that fit the filter, right? I just want to make sure that
it doesn't perform the match query on all the documents and the drop the
ones that don't fit the filter, because that would be a total waste of
resources as I'm only interested on a small portion of the documents.

{
"query" : {
"filtered" : {
"query": {
"match": {
"field1": "whatever"
}
},
"filter" : {
"term" : {
"field2" : 10
}
}
}
}
}

Thanks for clarifying this!

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You're right.

And there is also the post_filter (formerly known as "filter")
(http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-post-filter.html)
which starts with the query and ends with the filtering.

On Wednesday, January 28, 2015 at 12:46:58 AM UTC+1, Gabriel Gavilan
gavilán wrote:

So I suppose that when I run a filtered query like this one, ES filters
all the documents in the database, and then performs the match query only
to the documents that fit the filter, right? I just want to make sure that
it doesn't perform the match query on all the documents and the drop the
ones that don't fit the filter, because that would be a total waste of
resources as I'm only interested on a small portion of the documents.

{
"query" : {
"filtered" : {
"query": {
"match": {
"field1": "whatever"
}
},
"filter" : {
"term" : {
"field2" : 10
}
}
}
}
}

Thanks for clarifying this!

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