- Elasticsearch Guide: other versions:
- Getting Started
- Set up Elasticsearch
- Installing Elasticsearch
- Configuring Elasticsearch
- Important Elasticsearch configuration
- Important System Configuration
- Bootstrap Checks
- Heap size check
- File descriptor check
- Memory lock check
- Maximum number of threads check
- Maximum size virtual memory check
- Max file size check
- Maximum map count check
- Client JVM check
- Use serial collector check
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- OnError and OnOutOfMemoryError checks
- Early-access check
- G1GC check
- Stopping Elasticsearch
- Upgrade Elasticsearch
- Set up X-Pack
- Breaking changes
- Breaking changes in 6.0
- Aggregations changes
- Analysis changes
- Cat API changes
- Clients changes
- Cluster changes
- Document API changes
- Indices changes
- Ingest changes
- Java API changes
- Mapping changes
- Packaging changes
- Percolator changes
- Plugins changes
- Reindex changes
- REST changes
- Scripting changes
- Search and Query DSL changes
- Settings changes
- Stats and info changes
- Breaking changes in 6.1
- Breaking changes in 6.0
- X-Pack Breaking Changes
- API Conventions
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- Aggregations
- Metrics Aggregations
- Avg Aggregation
- Cardinality Aggregation
- Extended Stats Aggregation
- Geo Bounds Aggregation
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- Max Aggregation
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- Children Aggregation
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- Date Histogram Aggregation
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- Diversified Sampler Aggregation
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- Filters Aggregation
- Geo Distance Aggregation
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- Global Aggregation
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- IP Range Aggregation
- Missing Aggregation
- Nested Aggregation
- Range Aggregation
- Reverse nested Aggregation
- Sampler Aggregation
- Significant Terms Aggregation
- Significant Text Aggregation
- Terms Aggregation
- Pipeline Aggregations
- Avg Bucket Aggregation
- Derivative Aggregation
- Max Bucket Aggregation
- Min Bucket Aggregation
- Sum Bucket Aggregation
- Stats Bucket Aggregation
- Extended Stats Bucket Aggregation
- Percentiles Bucket Aggregation
- Moving Average Aggregation
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- Bucket Script Aggregation
- Bucket Selector Aggregation
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- Serial Differencing Aggregation
- Matrix Aggregations
- Caching heavy aggregations
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- Aggregation Metadata
- Returning the type of the aggregation
- Metrics Aggregations
- Indices APIs
- Create Index
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- cat APIs
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- Anatomy of an analyzer
- Testing analyzers
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- Token Filters
- Standard Token Filter
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- Length Token Filter
- Lowercase Token Filter
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- NGram Token Filter
- Edge NGram Token Filter
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- Stop Token Filter
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- Stemmer Override Token Filter
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- KStem Token Filter
- Snowball Token Filter
- Phonetic Token Filter
- Synonym Token Filter
- Synonym Graph Token Filter
- Compound Word Token Filters
- Reverse Token Filter
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- Unique Token Filter
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- Hunspell Token Filter
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- CJK Width Token Filter
- CJK Bigram Token Filter
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- Keep Words Token Filter
- Keep Types Token Filter
- Classic Token Filter
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- Decimal Digit Token Filter
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- Character Filters
- Modules
- Index Modules
- Ingest Node
- Pipeline Definition
- Ingest APIs
- Accessing Data in Pipelines
- Handling Failures in Pipelines
- Processors
- Append Processor
- Convert Processor
- Date Processor
- Date Index Name Processor
- Fail Processor
- Foreach Processor
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- Dot Expander Processor
- URL Decode Processor
- Monitoring Elasticsearch
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- Close Jobs
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- Get Buckets
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- Get Datafeed Statistics
- Get Influencers
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- Update Model Snapshots
- Security APIs
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- Migration APIs
- Deprecation Info APIs
- Definitions
- X-Pack Commands
- How To
- Testing
- Glossary of terms
- Release Notes
- 6.1.4 Release Notes
- 6.1.3 Release Notes
- 6.1.2 Release Notes
- 6.1.1 Release Notes
- 6.1.0 Release Notes
- 6.0.1 Release Notes
- 6.0.0 Release Notes
- 6.0.0-rc2 Release Notes
- 6.0.0-rc1 Release Notes
- 6.0.0-beta2 Release Notes
- 6.0.0-beta1 Release Notes
- 6.0.0-alpha2 Release Notes
- 6.0.0-alpha1 Release Notes
- 6.0.0-alpha1 Release Notes (Changes previously released in 5.x)
- X-Pack Release Notes
WARNING: Version 6.1 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
Request Body Search
editRequest Body Search
editThe search request can be executed with a search DSL, which includes the Query DSL, within its body. Here is an example:
GET /twitter/tweet/_search { "query" : { "term" : { "user" : "kimchy" } } }
And here is a sample response:
{ "took": 1, "timed_out": false, "_shards":{ "total" : 1, "successful" : 1, "skipped" : 0, "failed" : 0 }, "hits":{ "total" : 1, "max_score": 1.3862944, "hits" : [ { "_index" : "twitter", "_type" : "tweet", "_id" : "0", "_score": 1.3862944, "_source" : { "user" : "kimchy", "message": "trying out Elasticsearch", "date" : "2009-11-15T14:12:12", "likes" : 0 } } ] } }
Parameters
edit
|
A search timeout, bounding the search request to be executed within the specified time value and bail with the hits accumulated up to that point when expired. Defaults to no timeout. See Time units. |
|
To retrieve hits from a certain offset. Defaults to |
|
The number of hits to return. Defaults to |
|
The type of the search operation to perform. Can be
|
|
Set to |
|
The maximum number of documents to collect for each shard,
upon reaching which the query execution will terminate early. If set, the
response will have a boolean field |
|
The number of shard results that should be reduced at once on the coordinating node. This value should be used as a protection mechanism to reduce the memory overhead per search request if the potential number of shards in the request can be large. |
Out of the above, the search_type
and the request_cache
must be passed as
query-string parameters. The rest of the search request should be passed
within the body itself. The body content can also be passed as a REST
parameter named source
.
Both HTTP GET and HTTP POST can be used to execute search with body. Since not all clients support GET with body, POST is allowed as well.
Fast check for any matching docs
editIn case we only want to know if there are any documents matching a
specific query, we can set the size
to 0
to indicate that we are not
interested in the search results. Also we can set terminate_after
to 1
to indicate that the query execution can be terminated whenever the first
matching document was found (per shard).
GET /_search?q=message:elasticsearch&size=0&terminate_after=1
The response will not contain any hits as the size
was set to 0
. The
hits.total
will be either equal to 0
, indicating that there were no
matching documents, or greater than 0
meaning that there were at least
as many documents matching the query when it was early terminated.
Also if the query was terminated early, the terminated_early
flag will
be set to true
in the response.
{ "took": 3, "timed_out": false, "terminated_early": true, "_shards": { "total": 1, "successful": 1, "skipped" : 0, "failed": 0 }, "hits": { "total": 1, "max_score": 0.0, "hits": [] } }
The took
time in the response contains the milliseconds that this request
took for processing, beginning quickly after the node received the query, up
until all search related work is done and before the above JSON is returned
to the client. This means it includes the time spent waiting in thread pools,
executing a distributed search across the whole cluster and gathering all the
results.
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