Elasticsearch breaking changesedit

This list summarizes the most important breaking changes in Elasticsearch 7.17.20. For the complete list, go to Elasticsearch breaking changes.

Packaging changesedit

The Windows MSI installer package is no longer available.

We no longer release Windows MSI installer packages for Elasticsearch. These packages were previously released in beta and didn’t receive widespread adoption.

To install Elasticsearch on Windows, use the .zip archive package instead.

Cluster and node setting deprecationsedit

Deprecation for truststores with no trust entries

The use of SSL truststores that do not contain any trusted entries has been deprecated. The various *.ssl.truststore.path settings (for example xpack.security.transport.ssl.truststore.path or xpack.http.ssl.truststore.path) can be used to configure a set of "trust anchors" for SSL certificate verification. In Elasticsearch version 7 and earlier, it was permitted to configure a truststore that did not contain any trust anchors (that is, it was empty, or it contained "private key" entries only). In Elasticsearch version 8 and above, a truststore.path without any trusted certificate entries is no longer accepted, and will cause an error. This configuration is now deprecated in Elasticsearch version 7.17

To avoid deprecation warnings, remove any SSL truststores that do not contain any trusted entries.

Mapping deprecationsedit

Camel case date formats are deprecated.

The use of camel case patterns on date formats is deprecated and will be removed in Elasticsearch 8.0.0.

The corresponding snake case pattern should be used instead.

To avoid deprecation warnings, discontinue use of the camel case pattern.