# v3 - Breaking changes ## v3 – Breaking Changes OpenSearch 3.x introduces a significant set of changes that may impact the compatibility of your applications, ingestion pipelines, dashboards, and plugins. These changes are mainly related to: * the migration to **Apache Lucene 10**, * the mandatory adoption of **Java 21**, * the removal of legacy mechanisms (Security Manager, deprecated APIs), * changes in **mappings**, * updates in **OpenSearch Dashboards**, * and the expanded introduction of **Workspaces**. *** ### 🔗 Official OpenSearch References * Breaking Changes: * OpenSearch 3.0 – What to Expect: * Release Notes 3.0.0:\ *** ## 1. Migration to Apache Lucene 10 **Reference:** OpenSearch 3.0 adopts **Lucene 10**, which introduces: * internal changes to index structures, * modifications in segment management, * removal of older index formats, * incompatibilities with indices created using older Lucene versions. **Impact:**\ A **full reindex** may be required depending on your current version. *** ## 2. Mandatory Upgrade to Java 21 (JDK 21) **Reference:** OpenSearch 3.x now requires **Java 21**. **Impact:** * Runtime environments must be updated. * Internal or third‑party plugins must be recompiled. * Scripts relying on deprecated Java APIs must be updated. *** ## 3. Removal of the Java Security Manager **Reference:** The **Java Security Manager**, already deprecated, is fully removed. **Impact:** * Plugins relying on this mechanism must be rewritten. * Some security controls must be redesigned. *** ## 4. Mapping Changes **Reference:** OpenSearch 3.x introduces several important changes to **mappings**, mainly due to Lucene 10 and the cleanup of legacy APIs. *** ### 4.1 Complete Removal of Mapping Types **Reference:** Mapping types (`_type`) are now fully removed. **Impact:** * Ingestion pipelines must no longer send a type. * Requests using `/index/type/_doc` will fail. *** ### 4.2 Removal of Deprecated Mapping Parameters **Reference:** The following parameters are no longer supported: * `include_type_name` * `numeric_detection` * `date_detection` (partially modified) * `fielddata` on certain field types * `norms` on non‑text fields * `index_options` (simplified) * restrictions on `doc_values` **Impact:**\ Mappings containing these parameters will fail to create or update. *** ### 4.3 Changes to Field Types **Reference:** * **text**: stricter rules for custom analyzers * **keyword**: stricter behavior for `ignore_above` * **date**: stricter parsing for custom formats * **boolean**: non‑standard values no longer accepted * **nested**: reinforced structural limitations *** ### 4.4 Changes to Analyzers and Tokenizers **Reference:** With Lucene 10: * some analyzers change behavior, * some tokenizers are removed or renamed, * custom analyzers must be updated for compatibility. *** ### 4.5 Stricter Mapping Update Rules **Reference:** * stricter validation rules, * some dynamic fields can no longer be added, * index templates must be updated. *** ## 5. Plugin Changes **Reference:** The core OpenSearch update introduces: * changes in internal APIs, * required adjustments for third‑party plugins, * potential incompatibilities with plugins built for OpenSearch 1.x or 2.x. **Detailed impacts:** * Plugins must be recompiled with updated dependencies. * Plugins using internal Lucene classes must be adapted. * Security, analytics, and monitoring plugins are the most affected. * Unmaintained plugins will no longer work. *** ## 6. OpenSearch Dashboards Changes (3.x) **Reference:** OpenSearch Dashboards 3.x introduces major updates. *** ### 6.1 Node.js Runtime Upgrade **Reference:** Dashboards 3.x requires **Node.js ≥ 14**. *** ### 6.2 Internal API Changes **Reference:** * stricter visualization APIs * modified endpoints * changes in saved object handling *** ### 6.3 Changes to the `.opensearch_dashboards` Index **Reference:** * automatic migration * cleanup of deprecated fields * stronger validation rules *** ### 6.4 Visualization and Plugin Compatibility **Reference:** * plugins built for 1.x / 2.x must be updated * custom visualizations must be tested * removed fields may break dashboards *** ### 6.5 Security Hardening **Reference:** * stricter CSP rules * restrictions on inline scripts * limitations on external iframes *** ### 6.6 Changes in Filters and Search **Reference:** * stricter filters * explicit errors for unmapped fields * DSL queries must be validated *** ## 7. Migration to Workspaces **Reference:** Workspaces progressively replace the former *Spaces*. *** ### 7.1 What Workspaces Change **Reference:** * stronger isolation of dashboards and visualizations * granular permissions * ability to associate multiple data sources * clearer logical separation (teams, projects, environments) *** ### 7.2 User Impacts **Reference:** * dashboards may be migrated to a default workspace * shared dashboards may need reorganization * RBAC permissions must be reviewed --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://academy.cegedim.cloud/databases/opensearch/opensearch-features/v3-breaking-changes.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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