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OpenSearch/docs/reference/migration/migrate_7_5.asciidoc

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Add support for aliases in queries on _index. (#46944) Previously, queries on the _index field were not able to specify index aliases. This was a regression in functionality compared to the 'indices' query that was deprecated and removed in 6.0. Now queries on _index can specify an alias, which is resolved to the concrete index names when we check whether an index matches. To match a remote shard target, the pattern needs to be of the form 'cluster:index' to match the fully-qualified index name. Index aliases can be specified in the following query types: term, terms, prefix, and wildcard.
2019-09-23 16:21:37 -04:00
[[breaking-changes-7.5]]
== Breaking changes in 7.5
++++
<titleabbrev>7.5</titleabbrev>
++++
This section discusses the changes that you need to be aware of when migrating
your application to Elasticsearch 7.5.
See also <<release-highlights>> and <<es-release-notes>>.
//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide
//tag::notable-breaking-changes[]
//end::notable-breaking-changes[]
[discrete]
[[breaking_75_search_changes]]
=== Search Changes
[discrete]
==== Stricter checking for wildcard queries on _index
Previously, a wildcard query on the `_index` field matched directly against the
fully-qualified index name. Now, in order to match against remote indices like
[DOCS] Fix minor typo affecting formatting (#51655)
2020-01-30 02:41:30 -05:00
`cluster:index`, the query must contain a colon, as in `cl*ster:inde*`. This
Add support for aliases in queries on _index. (#46944) Previously, queries on the _index field were not able to specify index aliases. This was a regression in functionality compared to the 'indices' query that was deprecated and removed in 6.0. Now queries on _index can specify an alias, which is resolved to the concrete index names when we check whether an index matches. To match a remote shard target, the pattern needs to be of the form 'cluster:index' to match the fully-qualified index name. Index aliases can be specified in the following query types: term, terms, prefix, and wildcard.
2019-09-23 16:21:37 -04:00
behavior aligns with the way indices are matched in the search endpoint.