| Release Notes: https://www.elastic.co/guide/en/elasticsearch/reference/6.3/release-notes-6.3.1.html https://github.com/elastic/elasticsearch/releases/tag/v6.3.1 Elasticsearch 6.3.1 version is fixed. Issue #24069 - TimeoutExceptions on REST Client - with fix proposal https://github.com/elastic/elasticsearch/issues/24069 Important to know that existing some breaking changes in v6.0.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. _ https://www.elastic.co/guide/en/elasticsearch/reference/6.0/breaking-changes-6.0.html#breaking-changes-6.0 |