WARNING: Version 6.2 of Elasticsearch has passed its EOL date.
This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.
This section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 6.0.
Elasticsearch 6.0 can read indices created in version 5.0 or above. An Elasticsearch 6.0 node will not start in the presence of indices created in a version of Elasticsearch before 5.0.
Reindex indices from Elasticsearch 2.x or before
Indices created in Elasticsearch 2.x or before will need to be reindexed with Elasticsearch 5.x in order to be readable by Elasticsearch 6.x.
Multiple mapping types are not supported in indices created in 6.0
The ability to have multiple mapping types per index has been removed in 6.0. New indices will be restricted to a single type. This is the first step in the plan to remove mapping types altogether. Indices created in 5.x will continue to support multiple mapping types.
See Removal of mapping types for more information.
- Aggregations changes
- Cat API changes
- Clients changes
- Cluster changes
- Document API changes
- Indices changes
- Ingest changes
- Java API changes
- Mapping changes
- Packaging changes
- Percolator changes
- Plugins changes
- Reindex changes
- REST changes
- Stats and info changes
- Search and Query DSL changes
- Settings changes
- Scripting changes