Built-in analysis components

Built-in analysis components #

The server ships 83 analyzers, 50 tokenizers, 15 normalizers and 327 token filters, registered at startup. The authoritative, always-current list on YOUR node is:

GET /_analysis/components

Components are referenced by name — in a field’s schema ("analyzer": "english"), in a custom analyzer definition, or in an ad-hoc _analysis/analyze pipeline.

How it works #

The catalog is assembled in two layers. The engine core registers the minimal set that is always present: the standard and whitespace tokenizers, the lowercase normalizer, the lowercase/uppercase/ stopwords token filters, and the two named analyzers composed from them (standard, whitespace). Every other name below comes from the ~40 analysis plugin crates under contrib/analysis-*, registered at startup in one pass — foundation plugins first (core, stemmers, icu), then the CJK and per-language plugins, which intentionally override the basic analyzers from core with richer pipelines (language stop words, normalization, stemming).