Migrating to 8.17
editMigrating to 8.17
editThis section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 8.17.
See also What’s new in 8.17 and Release notes.
Breaking changes
editThere are no breaking changes in Elasticsearch 8.17.
Deprecations
editThe following functionality has been deprecated in Elasticsearch 8.17 and will be removed in a future version. While this won’t have an immediate impact on your applications, we strongly encourage you to take the described steps to update your code after upgrading to 8.17.
To find out if you are using any deprecated functionality, enable deprecation logging.
Mapping deprecations
editDeprecate _source.mode in mappings
Details
Configuring _source.mode in mappings is deprecated and will be removed in future versions. Use index.mapping.source.mode index setting instead.
Impact
Use index.mapping.source.mode index setting instead
REST API deprecations
editThe format of non-detailed error responses is changing in v9
Details
When an error occurs when processing a request, Elasticsearch returns information on that error in the REST response.
If http:detailed_errors.enabled: false is specified in node settings with the v8 REST API and below,
the format of this response changes significantly.
Starting with the v9 REST API, the JSON structure of responses with errors when the http.detailed_errors.enabled: false option is set
will be the same as when detailed errors are enabled (which is the default).
To keep using the existing format for non-detailed error responses, use the v8 REST API.
Impact
If you have set http.detailed_errors.enabled: false (the default is true)
the structure of JSON when any exceptions occur will change with the v9 REST API.
To keep using the existing format, use the v8 REST API.