Index Settings

  • Number of shards cannot be changed after index has been created
  • Number of replicas can be updated on existing index:
    PUT /index-name/_settings
      "number_of_replicas": 5
  • Number of replicas can be configured dynamically:
    index.auto_expand_replicas: 0-5
  • Query size can be limited to conserve heap memory:
    index.max_result_window: 10000
  • More index settings

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