Update data stream settings | Elasticsearch API documentation (8x-unreleased)

Update data stream settings Generally available

PUT /_data_stream/{name}/_settings

This API can be used to override settings on specific data streams. These overrides will take precedence over what is specified in the template that the data stream matches. To prevent your data stream from getting into an invalid state, only certain settings are allowed. If possible, the setting change is applied to all backing indices. Otherwise, it will be applied when the data stream is next rolled over. ##Required authorization

Index privileges: manage

Path parameters

name string | array[string] Required

A comma-separated list of data streams or data stream patterns.

Query parameters

dry_run boolean

If true, the request does not actually change the settings on any data streams or indices. Instead, it simulates changing the settings and reports back to the user what would have happened had these settings actually been applied.
master_timeout string

The 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.

Values are -1 or 0.
timeout string

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

Values are -1 or 0.

application/json

Body Required

index object
mode string
routing_path string | array[string]

One of:
string-1 string array-2 array[string]
soft_deletes object
Hide soft_deletes attributes Show soft_deletes attributes object
- enabled boolean
  
  Indicates whether soft deletes are enabled on the index.
- retention_lease object
  Hide retention_lease attribute Show retention_lease attribute object
  
  period string Required
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
sort object
Hide sort attributes Show sort attributes object
- field string | array[string]
- order string | array[string]
  
  One of:
  SegmentSortOrder string array-2 array[string]
  
  Values are asc, ASC, desc, or DESC.
  
  Values are asc, ASC, desc, or DESC.
- mode string | array[string]
  
  One of:
  SegmentSortMode string array-2 array[string]
  
  Values are min, MIN, max, or MAX.
  
  Values are min, MIN, max, or MAX.
- missing string | array[string]
  
  One of:
  SegmentSortMissing string array-2 array[string]
  
  Values are _last or _first.
  
  Values are _last or _first.
number_of_shards number | string

One of:
number-1 number string-2 string
number_of_replicas number | string

One of:
number-1 number string-2 string
number_of_routing_shards number
check_on_startup string

Values are true, false, or checksum.
codec string
routing_partition_size number | string

Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.

Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.

One of:
Stringifiedinteger number Stringifiedinteger string
load_fixed_bitset_filters_eagerly boolean
hidden boolean | string

One of:
boolean-1 boolean string-2 string
auto_expand_replicas string | null

One of:
string-1 string NullValue string | null

A null value that is to be interpreted as an actual value, unless other uses of null that are equivalent to a missing value. It is used for exemple in settings, where using the NullValue for a setting will reset it to its default value.
merge object
Hide merge attribute Show merge attribute object
- scheduler object
  Hide scheduler attributes Show scheduler attributes object
  
  max_thread_count number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
  
  max_merge_count number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
search object
Hide search attributes Show search attributes object
- idle object
  Hide idle attribute Show idle attribute object
  
  after string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
- slowlog object
  Hide slowlog attributes Show slowlog attributes object
  
  level string
  
  source number
  
  reformat boolean
  
  threshold object
  
  Hide threshold attributes Show threshold attributes object
  
  query object
  
  Hide query attributes Show query attributes object
  
  warn string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  info string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  debug string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  trace string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  fetch object
  
  Hide fetch attributes Show fetch attributes object
  
  warn string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  info string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  debug string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  trace string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
refresh_interval string

A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
max_result_window number
max_inner_result_window number
max_rescore_window number
max_docvalue_fields_search number
max_script_fields number
max_ngram_diff number
max_shingle_diff number
blocks object
Hide blocks attributes Show blocks attributes object
- read_only boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
- read_only_allow_delete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
- read boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
- write boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
- metadata boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
max_refresh_listeners number
analyze object
Hide analyze attribute Show analyze attribute object
- max_token_count number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
highlight object
Hide highlight attribute Show highlight attribute object
- max_analyzed_offset number
max_terms_count number
max_regex_length number
routing object
Hide routing attributes Show routing attributes object
- allocation object
  Hide allocation attributes Show allocation attributes object
  
  enable string
  
  Values are all, primaries, new_primaries, or none.
  
  include object
  
  Hide include attributes Show include attributes object
  
  _tier_preference string
  
  _id string
  
  initial_recovery object
  
  Hide initial_recovery attribute Show initial_recovery attribute object
  
  _id string
  
  disk object
  
  Hide disk attribute Show disk attribute object
  
  threshold_enabled boolean | string
  
  One of:
  boolean-1 boolean string-2 string
- rebalance object
  Hide rebalance attribute Show rebalance attribute object
  
  enable string Required
  
  Values are all, primaries, replicas, or none.
gc_deletes string

A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
default_pipeline string
final_pipeline string
lifecycle object
Hide lifecycle attributes Show lifecycle attributes object
- name string
- indexing_complete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
- origination_date number
  
  If specified, this is the timestamp used to calculate the index age for its phase transitions. Use this setting if you create a new index that contains old data and want to use the original creation date to calculate the index age. Specified as a Unix epoch value in milliseconds.
- parse_origination_date boolean
  
  Set to true to parse the origination date from the index name. This origination date is used to calculate the index age for its phase transitions. The index name must match the pattern ^{.*-{date_format}-\d+,} where the date_format is yyyy.MM.dd and the trailing digits are optional. An index that was rolled over would normally match the full format, for example logs-2016.10.31-000002). If the index name doesn’t match the pattern, index creation fails.
- step object
  Hide step attribute Show step attribute object
  
  wait_time_threshold string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
- rollover_alias string
  
  The index alias to update when the index rolls over. Specify when using a policy that contains a rollover action. When the index rolls over, the alias is updated to reflect that the index is no longer the write index. For more information about rolling indices, see Rollover.
- prefer_ilm boolean | string
  
  Preference for the system that manages a data stream backing index (preferring ILM when both ILM and DLM are applicable for an index).
  
  One of:
  boolean-1 boolean string-2 string
provided_name string
creation_date number | string

Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.

Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.

One of:
EpochTimeUnitMillis number StringifiedEpochTimeUnitMillis string

Time unit for milliseconds
creation_date_string string | number

A date and time, either as a string whose format can depend on the context (defaulting to ISO 8601), or a number of milliseconds since the Epoch. Elasticsearch accepts both as input, but will generally output a string representation.

One of:
DateTime string EpochTimeUnitMillis number

Time unit for milliseconds
uuid string
version object
Hide version attributes Show version attributes object
- created string
- created_string string
verified_before_close boolean | string

One of:
boolean-1 boolean string-2 string
format string | number

One of:
string-1 string number-2 number
max_slices_per_scroll number
translog object
Hide translog attributes Show translog attributes object
- sync_interval string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
- durability string
  
  Values are request, REQUEST, async, or ASYNC.
- flush_threshold_size number | string
  
  One of:
  ByteSize number ByteSize string
- retention object
  Hide retention attributes Show retention attributes object
  
  size number | string
  
  One of:
  ByteSize number ByteSize string
  
  age string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
query_string object
Hide query_string attribute Show query_string attribute object
- lenient boolean | string Required
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
priority number | string

One of:
number-1 number string-2 string
top_metrics_max_size number
analysis object
Hide analysis attributes Show analysis attributes object
- analyzer object
- char_filter object
- filter object
- normalizer object
- tokenizer object
settings object
time_series object
Hide time_series attributes Show time_series attributes object
- end_time string | number
  
  A date and time, either as a string whose format can depend on the context (defaulting to ISO 8601), or a number of milliseconds since the Epoch. Elasticsearch accepts both as input, but will generally output a string representation.
  
  One of:
  DateTime string EpochTimeUnitMillis number
  
  Time unit for milliseconds
- start_time string | number
  
  A date and time, either as a string whose format can depend on the context (defaulting to ISO 8601), or a number of milliseconds since the Epoch. Elasticsearch accepts both as input, but will generally output a string representation.
  
  One of:
  DateTime string EpochTimeUnitMillis number
  
  Time unit for milliseconds
queries object
Hide queries attribute Show queries attribute object
- cache object
  Hide cache attribute Show cache attribute object
  
  enabled boolean Required
similarity object

Configure custom similarity settings to customize how search results are scored.
mapping object
Hide mapping attributes Show mapping attributes object
- coerce boolean
- total_fields object
  Hide total_fields attributes Show total_fields attributes object
  
  limit number | string
  
  The maximum number of fields in an index. Field and object mappings, as well as field aliases count towards this limit. The limit is in place to prevent mappings and searches from becoming too large. Higher values can lead to performance degradations and memory issues, especially in clusters with a high load or few resources.
  
  One of:
  number-1 number string-2 string
  
  ignore_dynamic_beyond_limit boolean | string
  
  This setting determines what happens when a dynamically mapped field would exceed the total fields limit. When set to false (the default), the index request of the document that tries to add a dynamic field to the mapping will fail with the message Limit of total fields [X] has been exceeded. When set to true, the index request will not fail. Instead, fields that would exceed the limit are not added to the mapping, similar to dynamic: false. The fields that were not added to the mapping will be added to the _ignored field.
  
  One of:
  boolean-1 boolean string-2 string
- depth object
  Hide depth attribute Show depth attribute object
  
  limit number
  
  The maximum depth for a field, which is measured as the number of inner objects. For instance, if all fields are defined at the root object level, then the depth is 1. If there is one object mapping, then the depth is 2, etc.
- nested_fields object
  Hide nested_fields attribute Show nested_fields attribute object
  
  limit number
  
  The maximum number of distinct nested mappings in an index. The nested type should only be used in special cases, when arrays of objects need to be queried independently of each other. To safeguard against poorly designed mappings, this setting limits the number of unique nested types per index.
- nested_objects object
  Hide nested_objects attribute Show nested_objects attribute object
  
  limit number
  
  The maximum number of nested JSON objects that a single document can contain across all nested types. This limit helps to prevent out of memory errors when a document contains too many nested objects.
- field_name_length object
  Hide field_name_length attribute Show field_name_length attribute object
  
  limit number
  
  Setting for the maximum length of a field name. This setting isn’t really something that addresses mappings explosion but might still be useful if you want to limit the field length. It usually shouldn’t be necessary to set this setting. The default is okay unless a user starts to add a huge number of fields with really long names. Default is Long.MAX_VALUE (no limit).
- dimension_fields object
  Hide dimension_fields attribute Show dimension_fields attribute object
  
  limit number
  
  [preview] This functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features.
- source object
  Hide source attribute Show source attribute object
  
  mode string Required
  
  Values are disabled, stored, or synthetic.
- ignore_malformed boolean | string
  
  One of:
  boolean-1 boolean string-2 string
indexing.slowlog object
Hide indexing.slowlog attributes Show indexing.slowlog attributes object
- level string
- source number
- reformat boolean
- threshold object
  Hide threshold attribute Show threshold attribute object
  
  index object
  
  Hide index attributes Show index attributes object
  
  warn string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  info string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  debug string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  trace string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
indexing_pressure object
Hide indexing_pressure attribute Show indexing_pressure attribute object
- memory object Required
  Hide memory attribute Show memory attribute object
  
  limit number
  
  Number of outstanding bytes that may be consumed by indexing requests. When this limit is reached or exceeded, the node will reject new coordinating and primary operations. When replica operations consume 1.5x this limit, the node will reject new replica operations. Defaults to 10% of the heap.
store object
Hide store attributes Show store attributes object
- type string Required
  
  Any of:
  StorageType string StorageType string
  
  Values are fs, niofs, mmapfs, or hybridfs.
- allow_mmap boolean
  
  You can restrict the use of the mmapfs and the related hybridfs store type via the setting node.store.allow_mmap. This is a boolean setting indicating whether or not memory-mapping is allowed. The default is to allow it. This setting is useful, for example, if you are in an environment where you can not control the ability to create a lot of memory maps so you need disable the ability to use memory-mapping.

Responses

200 application/json
Hide response attribute Show response attribute object
- data_streams array[object] Required
  
  Hide data_streams attributes Show data_streams attributes object
  
  name string Required
  
  applied_to_data_stream boolean Required
  
  If the settings were successfully applied to the data stream (or would have been, if running in dry_run mode), it is true. If an error occurred, it is false.
  
  error string
  
  A message explaining why the settings could not be applied to the data stream.
  
  settings object Required
  
  Hide settings attributes Show settings attributes object
  
  index object
  
  mode string
  
  routing_path string | array[string]
  
  One of:
  string-1 string array-2 array[string]
  
  soft_deletes object
  
  Hide soft_deletes attributes Show soft_deletes attributes object
  
  enabled boolean
  
  Indicates whether soft deletes are enabled on the index.
  
  retention_lease object
  
  Hide retention_lease attribute Show retention_lease attribute object
  
  period string Required
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  sort object
  
  Hide sort attributes Show sort attributes object
  
  field string | array[string]
  
  order string | array[string]
  
  One of:
  SegmentSortOrder string array-2 array[string]
  
  Values are asc, ASC, desc, or DESC.
  
  Values are asc, ASC, desc, or DESC.
  
  mode string | array[string]
  
  One of:
  SegmentSortMode string array-2 array[string]
  
  Values are min, MIN, max, or MAX.
  
  Values are min, MIN, max, or MAX.
  
  missing string | array[string]
  
  One of:
  SegmentSortMissing string array-2 array[string]
  
  Values are _last or _first.
  
  Values are _last or _first.
  
  number_of_shards number | string
  
  One of:
  number-1 number string-2 string
  
  number_of_replicas number | string
  
  One of:
  number-1 number string-2 string
  
  number_of_routing_shards number
  
  check_on_startup string
  
  Values are true, false, or checksum.
  
  codec string
  
  routing_partition_size number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
  
  load_fixed_bitset_filters_eagerly boolean
  
  hidden boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  auto_expand_replicas string | null
  
  One of:
  string-1 string NullValue string | null
  
  A null value that is to be interpreted as an actual value, unless other uses of null that are equivalent to a missing value. It is used for exemple in settings, where using the NullValue for a setting will reset it to its default value.
  
  merge object
  
  Hide merge attribute Show merge attribute object
  
  scheduler object
  
  Hide scheduler attributes Show scheduler attributes object
  
  max_thread_count
  
  max_merge_count
  
  search object
  
  Hide search attributes Show search attributes object
  
  idle object
  
  Hide idle attribute Show idle attribute object
  
  after string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  slowlog object
  
  Hide slowlog attributes Show slowlog attributes object
  
  level string
  
  source number
  
  reformat boolean
  
  threshold object
  
  refresh_interval string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  max_result_window number
  
  max_inner_result_window number
  
  max_rescore_window number
  
  max_docvalue_fields_search number
  
  max_script_fields number
  
  max_ngram_diff number
  
  max_shingle_diff number
  
  blocks object
  
  Hide blocks attributes Show blocks attributes object
  
  read_only boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  read_only_allow_delete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  read boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  write boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  metadata boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  max_refresh_listeners number
  
  analyze object
  
  Hide analyze attribute Show analyze attribute object
  
  max_token_count number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
  
  highlight object
  
  Hide highlight attribute Show highlight attribute object
  
  max_analyzed_offset number
  
  max_terms_count number
  
  max_regex_length number
  
  routing object
  
  Hide routing attributes Show routing attributes object
  
  allocation object
  
  Hide allocation attributes Show allocation attributes object
  
  enable string
  
  Values are all, primaries, new_primaries, or none.
  
  include object
  
  initial_recovery object
  
  disk object
  
  rebalance object
  
  Hide rebalance attribute Show rebalance attribute object
  
  enable string Required
  
  Values are all, primaries, replicas, or none.
  
  gc_deletes string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  default_pipeline string
  
  final_pipeline string
  
  lifecycle object
  
  Hide lifecycle attributes Show lifecycle attributes object
  
  name string
  
  indexing_complete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  origination_date number
  
  If specified, this is the timestamp used to calculate the index age for its phase transitions. Use this setting if you create a new index that contains old data and want to use the original creation date to calculate the index age. Specified as a Unix epoch value in milliseconds.
  
  parse_origination_date boolean
  
  Set to true to parse the origination date from the index name. This origination date is used to calculate the index age for its phase transitions. The index name must match the pattern ^{.*-{date_format}-\d+,} where the date_format is yyyy.MM.dd and the trailing digits are optional. An index that was rolled over would normally match the full format, for example logs-2016.10.31-000002). If the index name doesn’t match the pattern, index creation fails.
  
  step object
  
  Hide step attribute Show step attribute object
  
  wait_time_threshold string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  rollover_alias string
  
  The index alias to update when the index rolls over. Specify when using a policy that contains a rollover action. When the index rolls over, the alias is updated to reflect that the index is no longer the write index. For more information about rolling indices, see Rollover.
  
  prefer_ilm boolean | string
  
  Preference for the system that manages a data stream backing index (preferring ILM when both ILM and DLM are applicable for an index).
  
  One of:
  boolean-1 boolean string-2 string
  
  provided_name string
  
  creation_date number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  EpochTimeUnitMillis number StringifiedEpochTimeUnitMillis string
  
  Time unit for milliseconds
  
  creation_date_string string | number
  
  A date and time, either as a string whose format can depend on the context (defaulting to ISO 8601), or a number of milliseconds since the Epoch. Elasticsearch accepts both as input, but will generally output a string representation.
  
  One of:
  DateTime string EpochTimeUnitMillis number
  
  Time unit for milliseconds
  
  uuid string
  
  version object
  
  Hide version attributes Show version attributes object
  
  created string
  
  created_string string
  
  verified_before_close boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  format string | number
  
  One of:
  string-1 string number-2 number
  
  max_slices_per_scroll number
  
  translog object
  
  Hide translog attributes Show translog attributes object
  
  sync_interval string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  durability string
  
  Values are request, REQUEST, async, or ASYNC.
  
  flush_threshold_size number | string
  
  One of:
  ByteSize number ByteSize string
  
  retention object
  
  Hide retention attributes Show retention attributes object
  
  size
  
  age string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  query_string object
  
  Hide query_string attribute Show query_string attribute object
  
  lenient boolean | string Required
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  priority number | string
  
  One of:
  number-1 number string-2 string
  
  top_metrics_max_size number
  
  analysis object
  
  Hide analysis attributes Show analysis attributes object
  
  analyzer object
  
  char_filter object
  
  filter object
  
  normalizer object
  
  tokenizer object
  
  settings object
  
  time_series object
  
  Hide time_series attributes Show time_series attributes object
  
  end_time string
  
  start_time string
  
  queries object
  
  Hide queries attribute Show queries attribute object
  
  cache object
  
  Hide cache attribute Show cache attribute object
  
  enabled boolean Required
  
  similarity object
  
  Configure custom similarity settings to customize how search results are scored.
  
  mapping object
  
  Hide mapping attributes Show mapping attributes object
  
  coerce boolean
  
  total_fields object
  
  Hide total_fields attributes Show total_fields attributes object
  
  limit
  
  ignore_dynamic_beyond_limit
  
  depth object
  
  Hide depth attribute Show depth attribute object
  
  limit number
  
  The maximum depth for a field, which is measured as the number of inner objects. For instance, if all fields are defined at the root object level, then the depth is 1. If there is one object mapping, then the depth is 2, etc.
  
  nested_fields object
  
  Hide nested_fields attribute Show nested_fields attribute object
  
  limit number
  
  The maximum number of distinct nested mappings in an index. The nested type should only be used in special cases, when arrays of objects need to be queried independently of each other. To safeguard against poorly designed mappings, this setting limits the number of unique nested types per index.
  
  nested_objects object
  
  Hide nested_objects attribute Show nested_objects attribute object
  
  limit number
  
  The maximum number of nested JSON objects that a single document can contain across all nested types. This limit helps to prevent out of memory errors when a document contains too many nested objects.
  
  field_name_length object
  
  Hide field_name_length attribute Show field_name_length attribute object
  
  limit number
  
  Setting for the maximum length of a field name. This setting isn’t really something that addresses mappings explosion but might still be useful if you want to limit the field length. It usually shouldn’t be necessary to set this setting. The default is okay unless a user starts to add a huge number of fields with really long names. Default is Long.MAX_VALUE (no limit).
  
  dimension_fields object
  
  Hide dimension_fields attribute Show dimension_fields attribute object
  
  limit number
  
  [preview] This functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features.
  
  source object
  
  Hide source attribute Show source attribute object
  
  mode string Required
  
  Values are disabled, stored, or synthetic.
  
  ignore_malformed boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  indexing.slowlog object
  
  Hide indexing.slowlog attributes Show indexing.slowlog attributes object
  
  level string
  
  source number
  
  reformat boolean
  
  threshold object
  
  Hide threshold attribute Show threshold attribute object
  
  index object
  
  indexing_pressure object
  
  Hide indexing_pressure attribute Show indexing_pressure attribute object
  
  memory object Required
  
  Hide memory attribute Show memory attribute object
  
  limit number
  
  Number of outstanding bytes that may be consumed by indexing requests. When this limit is reached or exceeded, the node will reject new coordinating and primary operations. When replica operations consume 1.5x this limit, the node will reject new replica operations. Defaults to 10% of the heap.
  
  store object
  
  Hide store attributes Show store attributes object
  
  type string Required
  
  Any of:
  StorageType string StorageType string
  
  Values are fs, niofs, mmapfs, or hybridfs.
  
  allow_mmap boolean
  
  You can restrict the use of the mmapfs and the related hybridfs store type via the setting node.store.allow_mmap. This is a boolean setting indicating whether or not memory-mapping is allowed. The default is to allow it. This setting is useful, for example, if you are in an environment where you can not control the ability to create a lot of memory maps so you need disable the ability to use memory-mapping.
  
  effective_settings object Required
  
  Hide effective_settings attributes Show effective_settings attributes object
  
  index object
  
  mode string
  
  routing_path string | array[string]
  
  One of:
  string-1 string array-2 array[string]
  
  soft_deletes object
  
  Hide soft_deletes attributes Show soft_deletes attributes object
  
  enabled boolean
  
  Indicates whether soft deletes are enabled on the index.
  
  retention_lease object
  
  Hide retention_lease attribute Show retention_lease attribute object
  
  period string Required
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  sort object
  
  Hide sort attributes Show sort attributes object
  
  field string | array[string]
  
  order string | array[string]
  
  One of:
  SegmentSortOrder string array-2 array[string]
  
  Values are asc, ASC, desc, or DESC.
  
  Values are asc, ASC, desc, or DESC.
  
  mode string | array[string]
  
  One of:
  SegmentSortMode string array-2 array[string]
  
  Values are min, MIN, max, or MAX.
  
  Values are min, MIN, max, or MAX.
  
  missing string | array[string]
  
  One of:
  SegmentSortMissing string array-2 array[string]
  
  Values are _last or _first.
  
  Values are _last or _first.
  
  number_of_shards number | string
  
  One of:
  number-1 number string-2 string
  
  number_of_replicas number | string
  
  One of:
  number-1 number string-2 string
  
  number_of_routing_shards number
  
  check_on_startup string
  
  Values are true, false, or checksum.
  
  codec string
  
  routing_partition_size number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
  
  load_fixed_bitset_filters_eagerly boolean
  
  hidden boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  auto_expand_replicas string | null
  
  One of:
  string-1 string NullValue string | null
  
  A null value that is to be interpreted as an actual value, unless other uses of null that are equivalent to a missing value. It is used for exemple in settings, where using the NullValue for a setting will reset it to its default value.
  
  merge object
  
  Hide merge attribute Show merge attribute object
  
  scheduler object
  
  Hide scheduler attributes Show scheduler attributes object
  
  max_thread_count
  
  max_merge_count
  
  search object
  
  Hide search attributes Show search attributes object
  
  idle object
  
  Hide idle attribute Show idle attribute object
  
  after string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  slowlog object
  
  Hide slowlog attributes Show slowlog attributes object
  
  level string
  
  source number
  
  reformat boolean
  
  threshold object
  
  refresh_interval string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  max_result_window number
  
  max_inner_result_window number
  
  max_rescore_window number
  
  max_docvalue_fields_search number
  
  max_script_fields number
  
  max_ngram_diff number
  
  max_shingle_diff number
  
  blocks object
  
  Hide blocks attributes Show blocks attributes object
  
  read_only boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  read_only_allow_delete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  read boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  write boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  metadata boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  max_refresh_listeners number
  
  analyze object
  
  Hide analyze attribute Show analyze attribute object
  
  max_token_count number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedinteger number Stringifiedinteger string
  
  highlight object
  
  Hide highlight attribute Show highlight attribute object
  
  max_analyzed_offset number
  
  max_terms_count number
  
  max_regex_length number
  
  routing object
  
  Hide routing attributes Show routing attributes object
  
  allocation object
  
  Hide allocation attributes Show allocation attributes object
  
  enable string
  
  Values are all, primaries, new_primaries, or none.
  
  include object
  
  initial_recovery object
  
  disk object
  
  rebalance object
  
  Hide rebalance attribute Show rebalance attribute object
  
  enable string Required
  
  Values are all, primaries, replicas, or none.
  
  gc_deletes string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  default_pipeline string
  
  final_pipeline string
  
  lifecycle object
  
  Hide lifecycle attributes Show lifecycle attributes object
  
  name string
  
  indexing_complete boolean | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  origination_date number
  
  If specified, this is the timestamp used to calculate the index age for its phase transitions. Use this setting if you create a new index that contains old data and want to use the original creation date to calculate the index age. Specified as a Unix epoch value in milliseconds.
  
  parse_origination_date boolean
  
  Set to true to parse the origination date from the index name. This origination date is used to calculate the index age for its phase transitions. The index name must match the pattern ^{.*-{date_format}-\d+,} where the date_format is yyyy.MM.dd and the trailing digits are optional. An index that was rolled over would normally match the full format, for example logs-2016.10.31-000002). If the index name doesn’t match the pattern, index creation fails.
  
  step object
  
  Hide step attribute Show step attribute object
  
  wait_time_threshold string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  rollover_alias string
  
  The index alias to update when the index rolls over. Specify when using a policy that contains a rollover action. When the index rolls over, the alias is updated to reflect that the index is no longer the write index. For more information about rolling indices, see Rollover.
  
  prefer_ilm boolean | string
  
  Preference for the system that manages a data stream backing index (preferring ILM when both ILM and DLM are applicable for an index).
  
  One of:
  boolean-1 boolean string-2 string
  
  provided_name string
  
  creation_date number | string
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  EpochTimeUnitMillis number StringifiedEpochTimeUnitMillis string
  
  Time unit for milliseconds
  
  creation_date_string string | number
  
  A date and time, either as a string whose format can depend on the context (defaulting to ISO 8601), or a number of milliseconds since the Epoch. Elasticsearch accepts both as input, but will generally output a string representation.
  
  One of:
  DateTime string EpochTimeUnitMillis number
  
  Time unit for milliseconds
  
  uuid string
  
  version object
  
  Hide version attributes Show version attributes object
  
  created string
  
  created_string string
  
  verified_before_close boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  format string | number
  
  One of:
  string-1 string number-2 number
  
  max_slices_per_scroll number
  
  translog object
  
  Hide translog attributes Show translog attributes object
  
  sync_interval string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  durability string
  
  Values are request, REQUEST, async, or ASYNC.
  
  flush_threshold_size number | string
  
  One of:
  ByteSize number ByteSize string
  
  retention object
  
  Hide retention attributes Show retention attributes object
  
  size
  
  age string
  
  A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.
  
  query_string object
  
  Hide query_string attribute Show query_string attribute object
  
  lenient boolean | string Required
  
  Some APIs will return values such as numbers also as a string (notably epoch timestamps). This behavior is used to capture this behavior while keeping the semantics of the field type.
  
  Depending on the target language, code generators can keep the union or remove it and leniently parse strings to the target type.
  
  One of:
  Stringifiedboolean boolean Stringifiedboolean string
  
  priority number | string
  
  One of:
  number-1 number string-2 string
  
  top_metrics_max_size number
  
  analysis object
  
  Hide analysis attributes Show analysis attributes object
  
  analyzer object
  
  char_filter object
  
  filter object
  
  normalizer object
  
  tokenizer object
  
  settings object
  
  time_series object
  
  Hide time_series attributes Show time_series attributes object
  
  end_time string
  
  start_time string
  
  queries object
  
  Hide queries attribute Show queries attribute object
  
  cache object
  
  Hide cache attribute Show cache attribute object
  
  enabled boolean Required
  
  similarity object
  
  Configure custom similarity settings to customize how search results are scored.
  
  mapping object
  
  Hide mapping attributes Show mapping attributes object
  
  coerce boolean
  
  total_fields object
  
  Hide total_fields attributes Show total_fields attributes object
  
  limit
  
  ignore_dynamic_beyond_limit
  
  depth object
  
  Hide depth attribute Show depth attribute object
  
  limit number
  
  The maximum depth for a field, which is measured as the number of inner objects. For instance, if all fields are defined at the root object level, then the depth is 1. If there is one object mapping, then the depth is 2, etc.
  
  nested_fields object
  
  Hide nested_fields attribute Show nested_fields attribute object
  
  limit number
  
  The maximum number of distinct nested mappings in an index. The nested type should only be used in special cases, when arrays of objects need to be queried independently of each other. To safeguard against poorly designed mappings, this setting limits the number of unique nested types per index.
  
  nested_objects object
  
  Hide nested_objects attribute Show nested_objects attribute object
  
  limit number
  
  The maximum number of nested JSON objects that a single document can contain across all nested types. This limit helps to prevent out of memory errors when a document contains too many nested objects.
  
  field_name_length object
  
  Hide field_name_length attribute Show field_name_length attribute object
  
  limit number
  
  Setting for the maximum length of a field name. This setting isn’t really something that addresses mappings explosion but might still be useful if you want to limit the field length. It usually shouldn’t be necessary to set this setting. The default is okay unless a user starts to add a huge number of fields with really long names. Default is Long.MAX_VALUE (no limit).
  
  dimension_fields object
  
  Hide dimension_fields attribute Show dimension_fields attribute object
  
  limit number
  
  [preview] This functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features.
  
  source object
  
  Hide source attribute Show source attribute object
  
  mode string Required
  
  Values are disabled, stored, or synthetic.
  
  ignore_malformed boolean | string
  
  One of:
  boolean-1 boolean string-2 string
  
  indexing.slowlog object
  
  Hide indexing.slowlog attributes Show indexing.slowlog attributes object
  
  level string
  
  source number
  
  reformat boolean
  
  threshold object
  
  Hide threshold attribute Show threshold attribute object
  
  index object
  
  indexing_pressure object
  
  Hide indexing_pressure attribute Show indexing_pressure attribute object
  
  memory object Required
  
  Hide memory attribute Show memory attribute object
  
  limit number
  
  Number of outstanding bytes that may be consumed by indexing requests. When this limit is reached or exceeded, the node will reject new coordinating and primary operations. When replica operations consume 1.5x this limit, the node will reject new replica operations. Defaults to 10% of the heap.
  
  store object
  
  Hide store attributes Show store attributes object
  
  type string Required
  
  Any of:
  StorageType string StorageType string
  
  Values are fs, niofs, mmapfs, or hybridfs.
  
  allow_mmap boolean
  
  You can restrict the use of the mmapfs and the related hybridfs store type via the setting node.store.allow_mmap. This is a boolean setting indicating whether or not memory-mapping is allowed. The default is to allow it. This setting is useful, for example, if you are in an environment where you can not control the ability to create a lot of memory maps so you need disable the ability to use memory-mapping.
  
  index_settings_results object Required
  
  Hide index_settings_results attributes Show index_settings_results attributes object
  
  applied_to_data_stream_only array[string] Required
  
  The list of settings that were applied to the data stream but not to backing indices. These will be applied to the write index the next time the data stream is rolled over.
  
  applied_to_data_stream_and_backing_indices array[string] Required
  
  The list of settings that were applied to the data stream and to all of its backing indices. These settings will also be applied to the write index the next time the data stream is rolled over.
  
  errors array[object]
  
  Hide errors attributes Show errors attributes object
  
  index string Required
  
  error string Required
  
  A message explaining why the settings could not be applied to specific indices.

PUT /_data_stream/{name}/_settings

curl \
 --request PUT 'http://api.example.com/_data_stream/{name}/_settings' \
 --header "Content-Type: application/json" \
 --data '"{\n  \"index.lifecycle.name\" : \"new-test-policy\",\n  \"index.number_of_shards\": 11\n}"'

Request example

This is a request to change two settings on a data stream.

{
  "index.lifecycle.name" : "new-test-policy",
  "index.number_of_shards": 11
}

Response examples (200)

This shows a response to `PUT /_data_stream/my-data-stream/_settings` when two settings are successfully updated on the data stream. In this case, `index.number_of_shards` is only applied to the data stream -- it will be applied to the write index on rollover. The setting `index.lifecycle.name` is applied to the data stream and all backing indices.

{
  "data_streams": [
    {
      "name": "my-data-stream",
      "applied_to_data_stream": true,
      "settings": {
        "index": {
          "lifecycle": {
            "name": "new-test-policy"
          },
          "number_of_shards": "11"
        }
      },
      "effective_settings": {
        "index": {
          "lifecycle": {
            "name": "new-test-policy"
          },
          "mode": "standard",
          "number_of_shards": "11",
          "number_of_replicas": "0"
        }
      },
      "index_settings_results": {
        "applied_to_data_stream_only": [
          "index.number_of_shards"
        ],
        "applied_to_data_stream_and_backing_indices": [
          "index.lifecycle.name"
        ]
      }
    }
  ]
}

This shows a response to `PUT /_data_stream/my-data-stream/_settings` when a setting is successfully applied to the data stream, but one of the backing indices, `.ds-my-data-stream-2025.05.28-000001`, has a write block. The response reports that the setting was not successfully applied to that index.

{
  "data_streams": [
    {
      "name": "my-data-stream",
      "applied_to_data_stream": true,
      "settings": {
        "index": {
          "lifecycle": {
            "name": "new-test-policy"
          },
          "number_of_shards": "11"
        }
      },
      "effective_settings": {
        "index": {
          "lifecycle": {
            "name": "new-test-policy"
          },
          "mode": "standard",
          "number_of_shards": "11",
          "number_of_replicas": "0"
        }
      },
      "index_settings_results": {
        "applied_to_data_stream_only": [
          "index.number_of_shards"
        ],
        "applied_to_data_stream_and_backing_indices": [
          "index.lifecycle.name"
        ],
        "errors": [
          {
            "index": ".ds-my-data-stream-2025.05.28-000001",
            "error": "index [.ds-my-data-stream-2025.05.28-000001] blocked by: [FORBIDDEN/9/index metadata (api)];"
          }
        ]
      }
    }
  ]
}

This shows a response to `PUT /_data_stream/my-data-stream/_settings` when a user attempts to set a setting that is not allowed on a data stream. As a result, no change was applied to the data stream.

{
  "data_streams": [
    {
      "name": "my-data-stream",
      "applied_to_data_stream": false,
      "error": "Cannot set the following settings on a data stream: [index.number_of_replicas]",
      "settings": {},
      "effective_settings": {},
      "index_settings_results": {
        "applied_to_data_stream_only": [],
        "applied_to_data_stream_and_backing_indices": []
      }
    }
  ]
}

Documentation preview

This is a preview of your version @2025-06-09 which is not yet released.

View current documentation

Update data stream settings Generally available

Path parameters

Query parameters

Body Required

routing_path string | array[string]

order string | array[string]

mode string | array[string]

missing string | array[string]

number_of_shards number | string

number_of_replicas number | string

routing_partition_size number | string

hidden boolean | string

auto_expand_replicas string | null

max_thread_count number | string

max_merge_count number | string

read_only boolean | string

read_only_allow_delete boolean | string

read boolean | string

write boolean | string

metadata boolean | string

max_token_count number | string

threshold_enabled boolean | string

indexing_complete boolean | string

prefer_ilm boolean | string

creation_date number | string

creation_date_string string | number

verified_before_close boolean | string

format string | number

flush_threshold_size number | string

size number | string

lenient boolean | string Required

priority number | string

end_time string | number

start_time string | number

limit number | string

ignore_dynamic_beyond_limit boolean | string

ignore_malformed boolean | string

type string Required

Responses

routing_path string | array[string]

order string | array[string]

mode string | array[string]

missing string | array[string]

number_of_shards number | string

number_of_replicas number | string

routing_partition_size number | string

hidden boolean | string

auto_expand_replicas string | null

read_only boolean | string

read_only_allow_delete boolean | string

read boolean | string

write boolean | string

metadata boolean | string

max_token_count number | string

indexing_complete boolean | string

prefer_ilm boolean | string

creation_date number | string

creation_date_string string | number

verified_before_close boolean | string

format string | number

flush_threshold_size number | string

lenient boolean | string Required

priority number | string

ignore_malformed boolean | string

type string Required

routing_path string | array[string]

order string | array[string]

mode string | array[string]

missing string | array[string]

number_of_shards number | string

number_of_replicas number | string

routing_partition_size number | string

hidden boolean | string

auto_expand_replicas string | null

read_only boolean | string

read_only_allow_delete boolean | string

read boolean | string

write boolean | string

metadata boolean | string

max_token_count number | string