[[breaking-changes-8.0]]
== Breaking changes in 8.0
++++
<titleabbrev>8.0</titleabbrev>
++++

This section discusses the changes that you need to be aware of when migrating
your application to {es} 8.0.

See also <<release-highlights>> and <<es-release-notes>>.

coming[8.0.0]

* <<breaking_80_aggregations_changes>>
* <<breaking_80_allocation_changes>>
* <<breaking_80_analysis_changes>>
* <<breaking_80_breaker_changes>>
* <<breaking_80_cluster_changes>>
* <<breaking_80_discovery_changes>>
* <<breaking_80_http_changes>>
* <<breaking_80_ilm_changes>>
* <<breaking_80_indices_changes>>
* <<breaking_80_java_changes>>
* <<breaking_80_mappings_changes>>
* <<breaking_80_network_changes>>
* <<breaking_80_node_changes>>
* <<breaking_80_packaging_changes>>
* <<breaking_80_reindex_changes>>
* <<breaking_80_api_changes>>
* <<breaking_80_rollup_changes>>
* <<breaking_80_search_changes>>
* <<breaking_80_security_changes>>
* <<breaking_80_settings_changes>>
* <<breaking_80_snapshots_changes>>
* <<breaking_80_threadpool_changes>>
* <<breaking_80_transport_changes>>

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

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

.Indices created in {es} 6.x and earlier versions are not supported.
[%collapsible]
====
*Details* +
Elasticsearch 8.0 can read indices created in version 7.0 or above.  An
Elasticsearch 8.0 node will not start in the presence of indices created in a
version of Elasticsearch before 7.0.

*Impact* +
Reindex indices created in {es} 6.x or before with {es} 7.x if they need to be carried forward to  {es} 8.x.
====

.REST API endpoints containing `_xpack` have been removed.
[%collapsible]
====
*Details* +
In 7.0, we deprecated REST endpoints that contain `_xpack` in their path. These
endpoints are now removed in 8.0. Each endpoint that was deprecated and removed
is replaced with a new endpoint that does not contain `_xpack`. As an example,
`/{index}/_xpack/graph/_explore` is replaced by `/{index}/_graph/explore`.

*Impact* +
Use the replacement REST API endpoints. Requests submitted to the `_xpack`
API endpoints will return an error.
====


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

include::migrate_8_0/aggregations.asciidoc[]
include::migrate_8_0/allocation.asciidoc[]
include::migrate_8_0/analysis.asciidoc[]
include::migrate_8_0/breaker.asciidoc[]
include::migrate_8_0/cluster.asciidoc[]
include::migrate_8_0/discovery.asciidoc[]
include::migrate_8_0/http.asciidoc[]
include::migrate_8_0/ilm.asciidoc[]
include::migrate_8_0/indices.asciidoc[]
include::migrate_8_0/java.asciidoc[]
include::migrate_8_0/mappings.asciidoc[]
include::migrate_8_0/network.asciidoc[]
include::migrate_8_0/node.asciidoc[]
include::migrate_8_0/packaging.asciidoc[]
include::migrate_8_0/reindex.asciidoc[]
include::migrate_8_0/api.asciidoc[]
include::migrate_8_0/rollup.asciidoc[]
include::migrate_8_0/search.asciidoc[]
include::migrate_8_0/security.asciidoc[]
include::migrate_8_0/settings.asciidoc[]
include::migrate_8_0/snapshots.asciidoc[]
include::migrate_8_0/threadpool.asciidoc[]
include::migrate_8_0/transport.asciidoc[]
include::migrate_8_0/migrate_to_java_time.asciidoc[]