OpenSearch/docs/reference/migration/migrate_7_10.asciidoc
Julie Tibshirani aa57bbd422
Consolidate validation for 'docvalue_fields'. (#60065)
This improves modularity and also fixes some issues when `docvalues_fields` is
used within `inner_hits` or the `top_hits` agg:
* We previously didn't resolve wildcards in field names.
* We also forgot to enforce the limit `index.max_docvalue_fields_search`.
2020-07-22 17:26:58 -07:00

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[[breaking-changes-7.10]]
== Breaking changes in 7.10
++++
<titleabbrev>7.10</titleabbrev>
++++
This section discusses the changes that you need to be aware of when migrating
your application to {es} 7.10.
See also <<release-highlights>> and <<es-release-notes>>.
// * <<breaking_710_blah_changes>>
// * <<breaking_710_blah_changes>>
//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide
//tag::notable-breaking-changes[]
[discrete]
[[breaking_710_search_changes]]
=== Search Changes
[discrete]
==== Missing checks for `index.max_docvalue_fields_search`
The setting `index.max_docvalue_fields_search` limits the number of fields that
can be retrieved through `docvalue_fields` in a search. Previously we only
checked this limit when `docvalue_fields` appeared in the top-level search
request body. Now we also enforce the limit when loading doc value fields in
an `inner_hits` section or in a `top_hits` aggregation.
//end::notable-breaking-changes[]