Get task information Technical preview

GET /_cat/tasks
Api key auth Basic auth Bearer auth

Get information about tasks currently running in the cluster. IMPORTANT: cat APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the task management API.

Query parameters

  • actions array[string]

    The task action names, which are used to limit the response.

  • detailed boolean

    If true, the response includes detailed information about shard recoveries.

  • nodes array[string]

    Unique node identifiers, which are used to limit the response.

  • parent_task_id string

    The parent task identifier, which is used to limit the response.

  • h string | array[string]

    List of columns to appear in the response. Supports simple wildcards.

  • s string | array[string]

    List of columns that determine how the table should be sorted. Sorting defaults to ascending and can be changed by setting :asc or :desc as a suffix to the column name.

  • time string

    Unit used to display time values.

    Values are nanos, micros, ms, s, m, h, or d.

  • timeout string

    Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.

  • wait_for_completion boolean

    If true, the request blocks until the task has completed.

Responses

GET /_cat/tasks 
curl \
 --request GET 'http://api.example.com/_cat/tasks' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response from `GET _cat/tasks?v=true&format=json`. 
[
  {
    "action": "cluster:monitor/tasks/lists[n]",
    "task_id": "oTUltX4IQMOUUVeiohTt8A:124",
    "parent_task_id": "oTUltX4IQMOUUVeiohTt8A:123",
    "type": "direct",
    "start_time": "1458585884904",
    "timestamp": "01:48:24",
    "running_time": "44.1micros",
    "ip": "127.0.0.1:9300",
    "node": "oTUltX4IQMOUUVeiohTt8A"
  },
  {
    "action": "cluster:monitor/tasks/lists",
    "task_id": "oTUltX4IQMOUUVeiohTt8A:123",
    "parent_task_id": "-",
    "type": "transport",
    "start_time": "1458585884904",
    "timestamp": "01:48:24",
    "running_time": "186.2micros",
    "ip": "127.0.0.1:9300",
    "node": "oTUltX4IQMOUUVeiohTt8A"
  }
]

Create a data stream Added in 7.9.0

PUT /_data_stream/{name}
Api key auth Basic auth Bearer auth

You must have a matching index template with data stream enabled.

Path parameters

  • name string Required

    Name of the data stream, which must meet the following criteria: Lowercase only; Cannot include \, /, *, ?, ", <, >, |, ,, #, :, or a space character; Cannot start with -, _, +, or .ds-; Cannot be . or ..; Cannot be longer than 255 bytes. Multi-byte characters count towards this limit faster.

Query parameters

  • master_timeout string

    Period to wait for a connection to the master node. If no response is received before the timeout expires, the request fails and returns an error.

  • timeout string

    Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • acknowledged boolean Required

      For a successful response, this value is always true. On failure, an exception is returned instead.
PUT /_data_stream/{name} 
curl \
 --request PUT 'http://api.example.com/_data_stream/{name}' \
 --header "Authorization: $API_KEY"

Get aliases

GET /_alias/{name}
Api key auth Basic auth Bearer auth

Retrieves information for one or more data stream or index aliases.

Path parameters

  • name string | array[string] Required

    Comma-separated list of aliases to retrieve. Supports wildcards (*). To retrieve all aliases, omit this parameter or use * or _all.

Query parameters

  • allow_no_indices boolean

    If false, the request returns an error if any wildcard expression, index alias, or _all value targets only missing or closed indices. This behavior applies even if the request targets other open indices.

  • expand_wildcards string | array[string]

    Type of index that wildcard patterns can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams. Supports comma-separated values, such as open,hidden. Valid values are: all, open, closed, hidden, none.

    Supported values include:

    • all: Match any data stream or index, including hidden ones.
    • open: Match open, non-hidden indices. Also matches any non-hidden data stream.
    • closed: Match closed, non-hidden indices. Also matches any non-hidden data stream. Data streams cannot be closed.
    • hidden: Match hidden data streams and hidden indices. Must be combined with open, closed, or both.
    • none: Wildcard expressions are not accepted.
  • ignore_unavailable boolean

    If false, the request returns an error if it targets a missing or closed index.

  • master_timeout string

    Period to wait for a connection to the master node. If no response is received before the timeout expires, the request fails and returns an error.

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • * object Additional properties
      Hide * attribute Show * attribute object
      • aliases object Required
        Hide aliases attribute Show aliases attribute object
        • * object Additional properties
          Hide * attributes Show * attributes object
          • filter object

            An Elasticsearch Query DSL (Domain Specific Language) object that defines a query.

            External documentation
          • index_routing string

            Value used to route indexing operations to a specific shard. If specified, this overwrites the routing value for indexing operations.

          • is_write_index boolean

            If true, the index is the write index for the alias.

          • routing string

            Value used to route indexing and search operations to a specific shard.

          • search_routing string

            Value used to route search operations to a specific shard. If specified, this overwrites the routing value for search operations.

          • is_hidden boolean

            If true, the alias is hidden. All indices for the alias must have the same is_hidden value.
GET /_alias/{name} 
curl \
 --request GET 'http://api.example.com/_alias/{name}' \
 --header "Authorization: $API_KEY"

Explain a document match result

POST /{index}/_explain/{id}
Api key auth Basic auth Bearer auth

Get information about why a specific document matches, or doesn't match, a query. It computes a score explanation for a query and a specific document.

Path parameters

  • index string Required

    Index names that are used to limit the request. Only a single index name can be provided to this parameter.

  • id string Required

    The document identifier.

Query parameters

  • analyzer string

    The analyzer to use for the query string. This parameter can be used only when the q query string parameter is specified.

  • analyze_wildcard boolean

    If true, wildcard and prefix queries are analyzed. This parameter can be used only when the q query string parameter is specified.

  • default_operator string

    The default operator for query string query: AND or OR. This parameter can be used only when the q query string parameter is specified.

    Values are and, AND, or, or OR.

  • df string

    The field to use as default where no field prefix is given in the query string. This parameter can be used only when the q query string parameter is specified.

  • lenient boolean

    If true, format-based query failures (such as providing text to a numeric field) in the query string will be ignored. This parameter can be used only when the q query string parameter is specified.

  • preference string

    The node or shard the operation should be performed on. It is random by default.

  • routing string

    A custom value used to route operations to a specific shard.

  • _source boolean | string | array[string]

    True or false to return the _source field or not or a list of fields to return.

  • _source_excludes string | array[string]

    A comma-separated list of source fields to exclude from the response. You can also use this parameter to exclude fields from the subset specified in _source_includes query parameter. If the _source parameter is false, this parameter is ignored.

  • _source_includes string | array[string]

    A comma-separated list of source fields to include in the response. If this parameter is specified, only these source fields are returned. You can exclude fields from this subset using the _source_excludes query parameter. If the _source parameter is false, this parameter is ignored.

  • stored_fields string | array[string]

    A comma-separated list of stored fields to return in the response.

  • q string

    The query in the Lucene query string syntax.

application/json

Body

Responses

POST /{index}/_explain/{id} 
curl \
 --request POST 'http://api.example.com/{index}/_explain/{id}' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '"{\n  \"query\" : {\n    \"match\" : { \"message\" : \"elasticsearch\" }\n  }\n}"'
Request example
Run `GET /my-index-000001/_explain/0` with the request body. Alternatively, run `GET /my-index-000001/_explain/0?q=message:elasticsearch` 
{
  "query" : {
    "match" : { "message" : "elasticsearch" }
  }
}
Response examples (200)
A successful response from `GET /my-index-000001/_explain/0`. 
{
  "_index":"my-index-000001",
  "_id":"0",
  "matched":true,
  "explanation":{
      "value":1.6943598,
      "description":"weight(message:elasticsearch in 0) [PerFieldSimilarity], result of:",
      "details":[
        {
            "value":1.6943598,
            "description":"score(freq=1.0), computed as boost * idf * tf from:",
            "details":[
              {
                  "value":2.2,
                  "description":"boost",
                  "details":[]
              },
              {
                  "value":1.3862944,
                  "description":"idf, computed as log(1 + (N - n + 0.5) / (n + 0.5)) from:",
                  "details":[
                    {
                        "value":1,
                        "description":"n, number of documents containing term",
                        "details":[]
                    },
                    {
                        "value":5,
                        "description":"N, total number of documents with field",
                        "details":[]
                    }
                  ]
              },
              {
                  "value":0.5555556,
                  "description":"tf, computed as freq / (freq + k1 * (1 - b + b * dl / avgdl)) from:",
                  "details":[
                    {
                        "value":1.0,
                        "description":"freq, occurrences of term within document",
                        "details":[]
                    },
                    {
                        "value":1.2,
                        "description":"k1, term saturation parameter",
                        "details":[]
                    },
                    {
                        "value":0.75,
                        "description":"b, length normalization parameter",
                        "details":[]
                    },
                    {
                        "value":3.0,
                        "description":"dl, length of field",
                        "details":[]
                    },
                    {
                        "value":5.4,
                        "description":"avgdl, average length of field",
                        "details":[]
                    }
                  ]
              }
            ]
        }
      ]
  }
}