elasticsearch/docs/reference/migration/migrate_8_0/analysis.asciidoc

[float]
[[breaking_80_analysis_changes]]
=== Analysis changes

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide

//tag::notable-breaking-changes[]

// end::notable-breaking-changes[]

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[[ngram-edgengram-filter-names-removed]]
==== The `nGram` and `edgeNGram` token filter names have been removed

The `nGram` and `edgeNGram` token filter names that have been deprecated since
version 6.4 have been removed. Both token filters can only be used by their 
alternative names `ngram` and `edge_ngram` since version 7.0.

[float]
[[nGram-edgeNGram-tokenizer-dreprecation]]
==== Disallow use of the `nGram` and `edgeNGram` tokenizer names

The `nGram` and `edgeNGram` tokenizer names haven been deprecated with 7.6 and are no longer
supported on new indices. Mappings for indices created after 7.6 will continue to work but
emit a deprecation warning. The tokenizer name should be changed to the fully equivalent
`ngram` or `edge_ngram` names for new indices and in index templates.