The Elasticsearch 7.9.2 release, made available on September 24, 2020, introduces a range of bug fixes and new features while addressing issues related to upgrading from previous versions. Among the notable new features is the experimental Event Query Language (EQL) designed for adversarial activity detection, enhancing the tool's capacity for complex log analysis. Additionally, Workplace Search features have been moved to the free tier, and improvements in pipeline aggregations and search filtering are highlighted. The release also rectifies several bugs, including memory leaks associated with global ordinals and Lucene, and resolves a security flaw related to scrolling searches with field-level security. However, users upgrading to version 7.9.0 face potential issues with machine learning annotations index mapping, which can be mitigated by updating directly to later versions. Furthermore, breaking changes such as adjustments to the field capabilities API and the deprecation of automatic import for dangling indices are noted, requiring users to adapt to the updated management processes.