indices.migrate_reindex.json

{
  "indices.migrate_reindex": {
    "documentation": {
      "url": "https://www.elastic.co/guide/en/elasticsearch/reference/master/data-stream-reindex-api.html",
      "description": "This API reindexes all legacy backing indices for a data stream. It does this in a persistent task. The persistent task id is returned immediately, and the reindexing work is completed in that task"
    },
    "stability": "experimental",
    "visibility": "private",
    "headers": {
      "accept": ["application/json"],
      "content_type": ["application/json"]
    },
    "url": {
      "paths": [
        {
          "path": "/_migration/reindex",
          "methods": ["POST"]
        }
      ]
    },
    "body": {
      "description": "The body contains the fields `mode` and `source.index, where the only mode currently supported is `upgrade`, and the `source.index` must be a data stream name",
      "required": true
    }
  }
}