--- type: api title: Get transforms description: **All methods and paths for this operation:** url: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/operation/operation-transform-get-transform resource: https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/operation/operation-transform-get-transform products: - Elasticsearch --- # Get transforms Availability: 7.5+ ## Paths - `GET` `/_transform/{transform_id}` - `GET` `/_transform` - [Api key auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#apikeyauth) - [Basic auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#basicauth) - [Bearer auth](/elastic/docs-builder/docs/4371/api/doc/elasticsearch/authentication#bearerauth) #### Path Parameters - `transform_id` (union Name | [] Name) — optional, leave it out to use `/_transform` Identifier for the transform. It can be a transform identifier or a wildcard expression. You can get information for all transforms by using `_all`, by specifying `*` as the ``, or by omitting the ``. ## Description Get configuration information for transforms. ## Required authorization * Cluster privileges: `monitor_transform` ## Query String Parameters - `allow_no_match` (boolean · default: true) Specifies what to do when the request: 1. Contains wildcard expressions and there are no transforms that match. 2. Contains the _all string or no identifiers and there are no matches. 3. Contains wildcard expressions and there are only partial matches. If this parameter is false, the request returns a 404 status code when there are no matches or only partial matches. - `from` (number · default: 0) Skips the specified number of transforms. - `size` (number · default: 100) Specifies the maximum number of transforms to obtain. - `exclude_generated` (boolean · default: false) Excludes fields that were automatically added when creating the transform. This allows the configuration to be in an acceptable format to be retrieved and then added to another cluster. ## Response `application/json` - `count` (number) - `transforms` ([] TransformSummary) - `authorization` ({} TransformAuthorization) The security privileges that the transform uses to run its queries. If Elastic Stack security features were disabled at the time of the most recent update to the transform, this property is omitted. - `api_key` ({} ApiKeyAuthorization) If an API key was used for the most recent update to the transform, its name and identifier are listed in the response. - `id` (string) The identifier for the API key. - `name` (string) The name of the API key. - `roles` ([] string) If a user ID was used for the most recent update to the transform, its roles at the time of the update are listed in the response. - `service_account` (string) If a service account was used for the most recent update to the transform, the account name is listed in the response. - `create_time` (EpochTimeUnitMillis) The time the transform was created. - `create_time_string` (DateTime) - `description` (string) Free text description of the transform. - `dest` ({} Destination) The destination for the transform. - `index` (string IndexName) The destination index for the transform. The mappings of the destination index are deduced based on the source fields when possible. If alternate mappings are required, use the create index API prior to starting the transform. - `aliases` ([] DestinationAlias) The aliases that the destination index for the transform should have. Aliases are manipulated using the stored credentials of the transform, which means the secondary credentials supplied at creation time (if both primary and secondary credentials are specified). The destination index is added to the aliases regardless of whether the destination index was created by the transform or pre-created by the user. - `alias` (string) The name of the alias. - `move_on_creation` (boolean · default: false) Whether the destination index should be the only index in this alias. If `true`, all the other indices will be removed from this alias before adding the destination index to this alias. This does not delete the removed indices; it only removes them from the alias. - `pipeline` (string) The unique identifier for an ingest pipeline. - `frequency` (string Duration) - `id` (string Id) - `latest` ({} Latest) - `sort` (string Field) Specifies the date field that is used to identify the latest documents. - `unique_key` ([] string Field) Specifies an array of one or more fields that are used to group the data. - `pivot` ({} Pivot) The pivot method transforms the data by aggregating and grouping it. - `aggregations` (map string to {} AggregationContainer) Defines how to aggregate the grouped data. The following aggregations are currently supported: average, bucket script, bucket selector, cardinality, filter, geo bounds, geo centroid, geo line, max, median absolute deviation, min, missing, percentiles, rare terms, scripted metric, stats, sum, terms, top metrics, value count, weighted average. See [AggregationContainer](https://www.elastic.co/elastic/docs-builder/docs/4371/api/doc/elasticsearch/types/_types-aggregations-aggregationcontainer) - `group_by` (map string to PivotGroupByContainer) Defines how to group the data. More than one grouping can be defined per pivot. The following groupings are currently supported: date histogram, geotile grid, histogram, terms. Map values ({} PivotGroupByContainer) - `date_histogram` ({} DateHistogramAggregation) - `calendar_interval` (enum CalendarInterval) Calendar-aware interval. Can be specified using the unit name, such as `month`, or as a single unit quantity, such as `1M`. Values: `second`, `1s`, `minute`, `1m`, `hour`, `1h`, `day`, `1d`, `week`, `1w`, `month`, `1M`, `quarter`, `1q`, `year`, `1y` - `extended_bounds` ({} ExtendedBoundsFieldDateMath) Enables extending the bounds of the histogram beyond the data itself. - `max` (FieldDateMath) Maximum value for the bound. - `min` (FieldDateMath) Minimum value for the bound. - `hard_bounds` ({} ExtendedBoundsFieldDateMath) Limits the histogram to specified bounds. - `max` (FieldDateMath) Maximum value for the bound. - `min` (FieldDateMath) Minimum value for the bound. - `field` (string Field) The date field whose values are use to build a histogram. - `fixed_interval` (string Duration) Fixed intervals: a fixed number of SI units and never deviate, regardless of where they fall on the calendar. - `format` (string) The date format used to format `key_as_string` in the response. If no `format` is specified, the first date format specified in the field mapping is used. - `interval` (string Duration) — deprecated - `min_doc_count` (number) Only returns buckets that have `min_doc_count` number of documents. By default, all buckets between the first bucket that matches documents and the last one are returned. - `missing` (DateTime) The value to apply to documents that do not have a value. By default, documents without a value are ignored. - `offset` (string Duration) Changes the start value of each bucket by the specified positive (`+`) or negative offset (`-`) duration. - `order` (AggregateOrder) The sort order of the returned buckets. - `params` (map string to object) - `script` (string Script) - `time_zone` (string) Time zone used for bucketing and rounding. Defaults to Coordinated Universal Time (UTC). - `keyed` (boolean) Set to `true` to associate a unique string key with each bucket and return the ranges as a hash rather than an array. - `geotile_grid` ({} GeoTileGridAggregation) - `field` (string Field) Field containing indexed `geo_point` or `geo_shape` values. If the field contains an array, `geotile_grid` aggregates all array values. - `precision` (number · default: 7) Integer zoom of the key used to define cells/buckets in the results. Values outside of the range [0,29] will be rejected. - `shard_size` (number) Allows for more accurate counting of the top cells returned in the final result the aggregation. Defaults to returning `max(10,(size x number-of-shards))` buckets from each shard. - `size` (number · default: 10000) The maximum number of buckets to return. - `bounds` (GeoBounds) A bounding box to filter the geo-points or geo-shapes in each bucket. - `histogram` ({} HistogramAggregation) - `extended_bounds` ({} ExtendedBoundsdouble) Enables extending the bounds of the histogram beyond the data itself. - `max` (number) Maximum value for the bound. - `min` (number) Minimum value for the bound. - `hard_bounds` ({} ExtendedBoundsdouble) Limits the range of buckets in the histogram. It is particularly useful in the case of open data ranges that can result in a very large number of buckets. - `max` (number) Maximum value for the bound. - `min` (number) Minimum value for the bound. - `field` (string Field) The name of the field to aggregate on. - `interval` (number) The interval for the buckets. Must be a positive decimal. - `min_doc_count` (number) Only returns buckets that have `min_doc_count` number of documents. By default, the response will fill gaps in the histogram with empty buckets. - `missing` (number) The value to apply to documents that do not have a value. By default, documents without a value are ignored. - `offset` (number) By default, the bucket keys start with 0 and then continue in even spaced steps of `interval`. The bucket boundaries can be shifted by using the `offset` option. - `order` (AggregateOrder) The sort order of the returned buckets. By default, the returned buckets are sorted by their key ascending. - `script` (string Script) - `format` (string) - `keyed` (boolean · default: false) If `true`, returns buckets as a hash instead of an array, keyed by the bucket keys. - `terms` ({} TermsAggregation) - `collect_mode` (enum TermsAggregationCollectMode) Determines how child aggregations should be calculated: breadth-first or depth-first. Supported values include: - `depth_first`: Expands all branches of the aggregation tree in one depth-first pass, before any pruning occurs. - `breadth_first`: Caches the set of documents that fall into the uppermost buckets for subsequent replay. Values: `depth_first`, `breadth_first` - `exclude` (TermsExclude) Values to exclude. Accepts regular expressions and partitions. - `execution_hint` (enum TermsAggregationExecutionHint) Determines whether the aggregation will use field values directly or global ordinals. Values: `map`, `global_ordinals`, `global_ordinals_hash`, `global_ordinals_low_cardinality` - `field` (string Field) The field from which to return terms. - `include` (TermsInclude) Values to include. Accepts regular expressions and partitions. - `min_doc_count` (number · default: 1) Only return values that are found in more than `min_doc_count` hits. - `missing` (boolean | number | string) The value to apply to documents that do not have a value. By default, documents without a value are ignored. - `missing_order` (enum MissingOrder) Values: `first`, `last`, `default` - `missing_bucket` (boolean) - `value_type` (string) Coerced unmapped fields into the specified type. - `order` (AggregateOrder) Specifies the sort order of the buckets. Defaults to sorting by descending document count. - `script` (string Script) - `shard_min_doc_count` (number) Regulates the certainty a shard has if the term should actually be added to the candidate list or not with respect to the `min_doc_count`. Terms will only be considered if their local shard frequency within the set is higher than the `shard_min_doc_count`. - `shard_size` (number) The number of candidate terms produced by each shard. By default, `shard_size` will be automatically estimated based on the number of shards and the `size` parameter. - `show_term_doc_count_error` (boolean) Set to `true` to return the `doc_count_error_upper_bound`, which is an upper bound to the error on the `doc_count` returned by each shard. - `size` (number · default: 10) The number of buckets returned out of the overall terms list. - `format` (string) - `retention_policy` ({} RetentionPolicyContainer) - `time` ({} RetentionPolicy) Specifies that the transform uses a time field to set the retention policy. - `field` (string Field) The date field that is used to calculate the age of the document. - `max_age` (string Duration) Specifies the maximum age of a document in the destination index. Documents that are older than the configured value are removed from the destination index. - `settings` ({} Settings) Defines optional transform settings. - `align_checkpoints` (boolean · default: true) Specifies whether the transform checkpoint ranges should be optimized for performance. Such optimization can align checkpoint ranges with the date histogram interval when date histogram is specified as a group source in the transform config. As a result, less document updates in the destination index will be performed thus improving overall performance. - `dates_as_epoch_millis` (boolean · default: false) Defines if dates in the ouput should be written as ISO formatted string or as millis since epoch. epoch_millis was the default for transforms created before version 7.11. For compatible output set this value to `true`. - `deduce_mappings` (boolean · default: true) Specifies whether the transform should deduce the destination index mappings from the transform configuration. - `docs_per_second` (number) Specifies a limit on the number of input documents per second. This setting throttles the transform by adding a wait time between search requests. The default value is null, which disables throttling. - `max_page_search_size` (number) Defines the initial page size to use for the composite aggregation for each checkpoint. If circuit breaker exceptions occur, the page size is dynamically adjusted to a lower value. The minimum value is `10` and the maximum is `65,536`. The default value is `500` for `pivot` transforms and `5000` for `latest` transforms. - `use_point_in_time` (boolean · default: true) Specifies whether the transform checkpoint will use the Point In Time API while searching over the source index. In general, Point In Time is an optimization that will reduce pressure on the source index by reducing the amount of refreshes and merges, but it can be expensive if a large number of Point In Times are opened and closed for a given index. The benefits and impact depend on the data being searched, the ingest rate into the source index, and the amount of other consumers searching the same source index. - `num_failure_retries` (number) Defines the number of retries on a recoverable failure before the transform task is marked as `failed`. The minimum value is `0` and the maximum is `100`, where `-1` indicates that the transform retries indefinitely. If unset, the cluster-level setting `num_transform_failure_retries` is used. This setting cannot be specified when `unattended` is `true`, because unattended transforms always retry indefinitely. - `unattended` (boolean · default: false) If `true`, the transform runs in unattended mode. In unattended mode, the transform retries indefinitely in case of an error which means the transform never fails. Setting the number of retries other than infinite fails in validation. - `source` ({} Source) The source of the data for the transform. - `index` (string Indices) The source indices for the transform. It can be a single index, an index pattern (for example, `"my-index-*""`), an array of indices (for example, `["my-index-000001", "my-index-000002"]`), or an array of index patterns (for example, `["my-index-*", "my-other-index-*"]`. For remote indices use the syntax `"remote_name:index_name"`. If any indices are in remote clusters then the master node and at least one transform node must have the `remote_cluster_client` node role. - `runtime_mappings` (RuntimeFields) Definitions of search-time runtime fields that can be used by the transform. For search runtime fields all data nodes, including remote nodes, must be 7.12 or later. - `query` (object) A query clause that retrieves a subset of data from the source index. - `sync` ({} SyncContainer) Defines the properties transforms require to run continuously. - `time` ({} TimeSync) Specifies that the transform uses a time field to synchronize the source and destination indices. - `delay` (string Duration · default: 60s) The time delay between the current time and the latest input data time. - `field` (string Field) The date field that is used to identify new documents in the source. In general, it’s a good idea to use a field that contains the ingest timestamp. If you use a different field, you might need to set the delay such that it accounts for data transmission delays. - `version` (string) The version of Elasticsearch that existed on the node when the transform was created. - `_meta` (Metadata) ## Code Examples #### Console ```console GET _transform?size=10 ``` #### JavaScript ```javascript const response = await client.transform.getTransform({ size: 10, }); ``` #### Python ```python resp = client.transform.get_transform( size="10", ) ``` #### curl ```curl curl -X GET "$ELASTICSEARCH_URL/_transform?size=10" \ -H "Authorization: ApiKey $ELASTIC_API_KEY" ``` #### Java ```java client.transform().getTransform(g -> g .size(10) ); ``` #### C# ```c# var response = await client.TransformManagement .GetTransformAsync(d1 => d1 .Size(10) ); ``` #### PHP ```php $resp = $client->transform()->getTransform([ "size" => "10", ]); ``` #### Ruby ```ruby response = client.transform.get_transform( size: "10" ) ``` ## Response Examples #### Get transform response example1 A successful response that contains configuration information for a transform. ```json { "count": 1, "transforms": [ { "id": "ecommerce_transform1", "authorization": { "roles": [ "superuser" ] }, "version": "8.4.0", "create_time": 1656023416565, "source": { "index": [ "kibana_sample_data_ecommerce" ], "query": { "term": { "geoip.continent_name": { "value": "Asia" } } } }, "dest": { "index": "kibana_sample_data_ecommerce_transform1", "pipeline": "add_timestamp_pipeline" }, "frequency": "5m", "sync": { "time": { "field": "order_date", "delay": "60s" } }, "pivot": { "group_by": { "customer_id": { "terms": { "field": "customer_id" } } }, "aggregations": { "max_price": { "max": { "field": "taxful_total_price" } } } }, "description": "Maximum priced ecommerce data by customer_id in Asia", "settings": {}, "retention_policy": { "time": { "field": "order_date", "max_age": "30d" } } } ] } ```