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Doc: Max field expansions is not a hard limit #61120

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Aug 18, 2020
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Doc: Max field expansions is not a hard limit #61120

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Max field expansions is not a hard limit
ppf2 Aug 13, 2020
f697ce2
Update docs/reference/migration/migrate_7_0/search.asciidoc
jrodewig Aug 18, 2020
1eec1c2
Fix formatting
jrodewig Aug 18, 2020
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7 changes: 5 additions & 2 deletions docs/reference/migration/migrate_7_0/search.asciidoc
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Expand Up @@ -149,8 +149,11 @@ for a particular index with the index setting `index.max_regex_length`.

Executing queries that use automatic expansion of fields (e.g. `query_string`, `simple_query_string`
or `multi_match`) can have performance issues for indices with a large numbers of fields.
To safeguard against this, a hard limit of 1024 fields has been introduced for queries
using the "all fields" mode ("default_field": "*") or other fieldname expansions (e.g. "foo*").
To safeguard against this, a default limit of 1024 fields has been introduced for
queries using the "all fields" mode (`"default_field": "*"`) or other fieldname
expansions (e.g. `"foo*"`). If needed, you can change this limit using the
<<indices-query-bool-max-clause-count,`indices.query.bool.max_clause_count`>>
dynamic cluster setting.

[discrete]
[[invalid-search-request-body]]
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