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[DOCS] Note clause limit in index.mapping.total_fields.limit docs (#48153)

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Notes that you should increase the `indices.query.bool.max_clause_count`
setting if you increase the `index.mapping.total_fields.limit`
setting.

Closes #46928.
This commit is contained in:
James Rodewig 2019-10-18 10:20:23 -04:00
parent fbd43196a8
commit 1d06be2f05
1 changed files with 11 additions and 0 deletions
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docs/reference/mapping.asciidoc
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@ -80,6 +80,17 @@ causing a mapping explosion:
`index.mapping.total_fields.limit`:: `index.mapping.total_fields.limit`::
The maximum number of fields in an index. Field and object mappings, as well as The maximum number of fields in an index. Field and object mappings, as well as
field aliases count towards this limit. The default value is `1000`. field aliases count towards this limit. The default value is `1000`.
+
[IMPORTANT]
====
The limit is in place to prevent mappings and searches from becoming too
large. Higher values can lead to performance degradations and memory issues,
especially in clusters with a high load or few resources.
If you increase this setting, we recommend you also increase the
<<search-settings,`indices.query.bool.max_clause_count`>> setting, which
limits the maximum number of <<query-dsl-bool-query,boolean clauses>> in a query.
====
`index.mapping.depth.limit`:: `index.mapping.depth.limit`::
The maximum depth for a field, which is measured as the number of inner The maximum depth for a field, which is measured as the number of inner