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ES EXPENSIVE QUERIES

• Generally execute slowly
• Can affect cluster

Linear scans to identify matches

• script
• queries on certain fields of types that are not indexed but have doc values enabled
  • boolean
  • numberic
  • date
  • ip
  • geo_point
  • keyword

High upfront cost

• fuzzy queries
• regexp queries
• prefix queries
• wildcard queries
• range queries on text / keyword fields

Joining queries

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References

• https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl.html