Change8

ELK Stack

Backend & Infra

Free and Open Source, Distributed, RESTful Search Engine

Latest: v9.5.225 releases49 common errorsView on GitHub

Release History

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v9.5.25 fixes
Aug 20, 2026

This release of Elasticsearch 9.5.2 addresses several critical bugs related to the _bulk and _search APIs, index visibility, node responsiveness, and memory leaks in the query cache.

v8.19.205 fixes
Aug 11, 2026

This release addresses several critical bugs in the _bulk, _search, _cat/indices, _snapshot, and _update_by_query APIs, improving stability and reliability.

v9.5.115 fixes
Aug 11, 2026

This release of Elasticsearch 9.5.1 includes a collection of bug fixes across various APIs, improving stability and reliability. Key fixes address issues with the _bulk, _search, and _update APIs, among others.

v9.4.5
Aug 11, 2026

This release provides updates for Elasticsearch version 9.4.5. Please refer to the release notes for detailed information.

v9.5.01 feature
Aug 4, 2026

Elasticsearch 9.5.0 has been released, introducing new features and improvements. Refer to the release notes for detailed information.

v8.19.195 fixes
Jul 21, 2026

This release of Elasticsearch 8.19.19 addresses several critical bugs in the bulk, search, cat indices, cluster stats, and snapshot APIs, improving stability and data integrity.

v9.3.85 fixes
Jul 21, 2026

This release of Elasticsearch addresses several critical bugs, including issues with the _bulk and _search APIs, and resolves a security vulnerability. It also improves stability by fixing a memory leak in the IndexWriter.

v9.4.41 fix
Jul 21, 2026

This release of Elasticsearch 9.4.4 includes a fix for an issue with the cluster health API reporting incorrect node status when nodes have no shards assigned.

v9.3.7
Jun 30, 2026

This release provides updates and fixes for Elasticsearch version 9.3.7. Specific details are available in the linked release notes.

v8.19.18
Jun 30, 2026

This release (8.19.18) provides updates and fixes for Elasticsearch. Detailed information is available in the linked release notes.

v9.4.3
Jun 30, 2026

This release provides maintenance updates for Elasticsearch version 9.4.3. Specific details are available in the linked release notes.

v9.3.6
Jun 23, 2026

This release provides updates for Elasticsearch version 9.3.6. Specific details regarding changes are available in the linked release notes.

v8.19.17
Jun 23, 2026

This release provides maintenance updates for Elasticsearch version 8.19.17. Refer to the linked release notes for specific details.

v9.4.2
May 28, 2026

This release provides updates for Elasticsearch version 9.4.2. Specific details regarding features, fixes, and changes are available in the linked release notes.

v9.3.5
May 28, 2026

This release provides maintenance updates for Elasticsearch version 9.3.5. Specific details are available in the linked release notes.

v8.19.16
May 28, 2026

This release provides maintenance updates for Elasticsearch version 8.19.16. Specific details on changes can be found in the linked release notes.

v9.4.1
May 12, 2026

This release provides updates and fixes for Elasticsearch version 9.4.1. Detailed release notes are available via the provided links.

v9.4.0
May 5, 2026

This release announcement provides links to the download page and detailed release notes for Elasticsearch version 9.4.0.

v9.3.4
Apr 30, 2026

This release provides updates for Elasticsearch version 9.3.4. Specific details regarding changes are available in the linked release notes.

v8.19.15
Apr 30, 2026

This release provides maintenance updates for Elasticsearch version 8.19.15. Refer to the linked release notes for specific details.

v8.19.14
Apr 8, 2026

This release provides maintenance updates for Elasticsearch version 8.19.14. Specific details on changes are available in the linked release notes.

v9.2.8
Apr 8, 2026

This release provides updates for Elasticsearch version 9.2.8. Specific details regarding features, fixes, and changes are available in the linked release notes.

v9.3.3
Apr 8, 2026

This release provides updates and fixes for Elasticsearch version 9.3.3. Detailed information is available in the linked release notes.

v9.3.2
Mar 19, 2026

This release provides maintenance updates for Elasticsearch version 9.3.2. Specific details regarding changes are available in the linked release notes.

v9.2.7
Mar 19, 2026

This release provides maintenance updates for Elasticsearch version 9.2.7. Specific details regarding changes are available in the linked release notes.

Common Errors

IllegalArgumentException41 reports

This error typically occurs in elk-stack. Check the example issues for common solutions.

ResourceAlreadyExistsException13 reports

The ResourceAlreadyExistsException in ELK Stack tests, particularly with sparse vector configurations, typically arises from attempting to create an index, alias, or other resource that already exists within the test environment. This often happens due to incomplete cleanup from previous test runs or race conditions in parallel test execution. To fix this, ensure that all test resources are properly deleted before attempting to create them again, and consider adding explicit checks or retry mechanisms for resource creation where appropriate.

InvalidArgumentException10 reports

This error typically occurs in elk-stack. Check the example issues for common solutions.

InvocationTargetException9 reports

InvocationTargetException often wraps an actual exception thrown within a method invoked via reflection. Fix it by examining the underlying cause using the stack trace to identify the real exception, then address that specific issue like a NullPointerException or IllegalArgumentException related to argument types or object states during the reflective call.

NoSuchElementException8 reports

NoSuchElementException in Elasticsearch's VectorScorer tests usually indicates that the test is trying to access an element from an empty or non-existent collection/iterator. This can be caused by incorrect setup or teardown of test resources, or indexing issues. Fix this by ensuring that all required data structures are properly initialized and populated with data before the tests access them and verify data exists via `Assert.assertTrue` or similar before accessing via iterators.

MultipleFailureException7 reports

This error typically occurs in elk-stack. Check the example issues for common solutions.

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