anchor.diff:    }
   }
   ----
  -// TEST[continued]
   ====
   
   . If you previously changed your {ilm-init} poll interval, change it back to its
  
positive.code: [source,console-result]
  ----
  {
    "indices" : [ ],
    "aliases" : [ ],
    "data_streams" : [ ]
  }
  ----
  ====
  
  . Create or update an index template. This template should contain the
  
negative.code: backing index, which is auto-generated when the stream is created.
  
  Before creating a data stream, we recommend you carefully consider which
  mappings and settings to include in this template.
  
  If you later need to change the mappings or settings for a data stream, you have
  a few options:
  
  * <<add-new-field-mapping-to-a-data-stream>>
  * <<change-existing-field-mapping-in-a-data-stream>>
  * <<change-dynamic-index-setting-for-a-data-stream>>
  * <<change-static-index-setting-for-a-data-stream>>
  
  TIP: If your changes include modifications to existing field mappings or
  <<index-modules-settings,static index settings>>, a reindex is often required to
  apply the changes to a data stream's backing indices. If you are already
  performing a reindex, you can use the same process to add new field
  mappings and change <<index-modules-settings,dynamic index settings>>. See
  <<data-streams-use-reindex-to-change-mappings-settings>>.
  
  ////
  [source,console]
  