122 lines
3.2 KiB
Plaintext
122 lines
3.2 KiB
Plaintext
[[search]]
|
|
= Search APIs
|
|
|
|
[partintro]
|
|
--
|
|
|
|
Most search APIs are <<search-multi-index-type,multi-index, multi-type>>, with the
|
|
exception of the <<search-explain>> endpoints.
|
|
|
|
[float]
|
|
[[search-routing]]
|
|
== Routing
|
|
|
|
When executing a search, it will be broadcast to all the index/indices
|
|
shards (round robin between replicas). Which shards will be searched on
|
|
can be controlled by providing the `routing` parameter. For example,
|
|
when indexing tweets, the routing value can be the user name:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
POST /twitter/tweet?routing=kimchy
|
|
{
|
|
"user" : "kimchy",
|
|
"postDate" : "2009-11-15T14:12:12",
|
|
"message" : "trying out Elasticsearch"
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
|
|
In such a case, if we want to search only on the tweets for a specific
|
|
user, we can specify it as the routing, resulting in the search hitting
|
|
only the relevant shard:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
POST /twitter/tweet/_search?routing=kimchy
|
|
{
|
|
"query": {
|
|
"bool" : {
|
|
"must" : {
|
|
"query_string" : {
|
|
"query" : "some query string here"
|
|
}
|
|
},
|
|
"filter" : {
|
|
"term" : { "user" : "kimchy" }
|
|
}
|
|
}
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
// TEST[continued]
|
|
|
|
The routing parameter can be multi valued represented as a comma
|
|
separated string. This will result in hitting the relevant shards where
|
|
the routing values match to.
|
|
|
|
[float]
|
|
[[stats-groups]]
|
|
== Stats Groups
|
|
|
|
A search can be associated with stats groups, which maintains a
|
|
statistics aggregation per group. It can later be retrieved using the
|
|
<<indices-stats,indices stats>> API
|
|
specifically. For example, here is a search body request that associate
|
|
the request with two different groups:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
POST /_search
|
|
{
|
|
"query" : {
|
|
"match_all" : {}
|
|
},
|
|
"stats" : ["group1", "group2"]
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
// TEST[setup:twitter]
|
|
|
|
[float]
|
|
[[global-search-timeout]]
|
|
== Global Search Timeout
|
|
|
|
Individual searches can have a timeout as part of the
|
|
<<search-request-body>>. Since search requests can originate from many
|
|
sources, Elasticsearch has a dynamic cluster-level setting for a global
|
|
search timeout that applies to all search requests that do not set a
|
|
timeout in the <<search-request-body>>. The default value is no global
|
|
timeout. The setting key is `search.default_search_timeout` and can be
|
|
set using the <<cluster-update-settings>> endpoints. Setting this value
|
|
to `-1` resets the global search timeout to no timeout.
|
|
|
|
--
|
|
|
|
include::search/search.asciidoc[]
|
|
|
|
include::search/uri-request.asciidoc[]
|
|
|
|
include::search/request-body.asciidoc[]
|
|
|
|
include::search/search-template.asciidoc[]
|
|
|
|
include::search/search-shards.asciidoc[]
|
|
|
|
include::search/suggesters.asciidoc[]
|
|
|
|
include::search/multi-search.asciidoc[]
|
|
|
|
include::search/count.asciidoc[]
|
|
|
|
include::search/validate.asciidoc[]
|
|
|
|
include::search/explain.asciidoc[]
|
|
|
|
include::search/profile.asciidoc[]
|
|
|
|
include::search/percolate.asciidoc[]
|
|
|
|
include::search/field-stats.asciidoc[]
|