|
| 1 | +## Version 3.6.0 Release Notes |
| 2 | + |
| 3 | +Compatible with OpenSearch and OpenSearch Dashboards version 3.6.0 |
| 4 | + |
| 5 | +### Features |
| 6 | +* Introduce V2 Chat Agent with unified interface, multi-modal support, and simplified registration ([#4732](https://github.com/opensearch-project/ml-commons/pull/4732)) |
| 7 | +* Add semantic and hybrid search APIs for long-term memory retrieval in agentic memory ([#4658](https://github.com/opensearch-project/ml-commons/pull/4658)) |
| 8 | +* Add token usage tracking for Conversational, AG_UI, and Plan-Execute-Reflect agents ([#4683](https://github.com/opensearch-project/ml-commons/pull/4683)) |
| 9 | +* Add LAST_TOKEN pooling implementation for text embedding models used by decoder-only models ([#4711](https://github.com/opensearch-project/ml-commons/pull/4711)) |
| 10 | +* Add NONE pooling mode to support pre-pooled model outputs without redundant pooling computation ([#4710](https://github.com/opensearch-project/ml-commons/pull/4710)) |
| 11 | +* Add support for custom fallback query in QueryPlanningTool for agentic search ([#4729](https://github.com/opensearch-project/ml-commons/pull/4729)) |
| 12 | +* Support messages array in all memory types and chat history in AGUI agent ([#4645](https://github.com/opensearch-project/ml-commons/pull/4645)) |
| 13 | +* Add post-memory hook with structured message support for context managers ([#4687](https://github.com/opensearch-project/ml-commons/pull/4687)) |
| 14 | +* Improve EncryptorImpl with asynchronous handling for scalability and fix duplicate master key generation ([#3919](https://github.com/opensearch-project/ml-commons/pull/3919)) |
| 15 | +* Support aliases and wildcard index patterns in QueryPlanningTool ([#4726](https://github.com/opensearch-project/ml-commons/pull/4726)) |
| 16 | + |
| 17 | +### Enhancements |
| 18 | +* Add more detailed logging to Agent Workflow to enable debugging and metric collection ([#4681](https://github.com/opensearch-project/ml-commons/pull/4681)) |
| 19 | +* Allow overwrite during execute for inline create context management during agent register ([#4637](https://github.com/opensearch-project/ml-commons/pull/4637)) |
| 20 | +* Add helper method for Nova clean request ([#4676](https://github.com/opensearch-project/ml-commons/pull/4676)) |
| 21 | +* Override ValidatingObjectInputStream.resolveClass() to support plugin classloader fallback ([#4692](https://github.com/opensearch-project/ml-commons/pull/4692)) |
| 22 | +* Restore AGUI context for legacy interface agent ([#4720](https://github.com/opensearch-project/ml-commons/pull/4720)) |
| 23 | +* Escape tool name and description to handle quotation marks properly ([#4747](https://github.com/opensearch-project/ml-commons/pull/4747)) |
| 24 | + |
| 25 | +### Bug Fixes |
| 26 | +* Fix SdkAsyncHttpClient resource leak in connector executors causing connection pool exhaustion ([#4716](https://github.com/opensearch-project/ml-commons/pull/4716)) |
| 27 | +* Fix Tags.addTag() return value not captured after immutable Tags change, causing tags to be silently dropped ([#4712](https://github.com/opensearch-project/ml-commons/pull/4712)) |
| 28 | +* Fix connection_timeout and read_timeout defaults from 30000 to 30 to match seconds unit ([#4759](https://github.com/opensearch-project/ml-commons/pull/4759)) |
| 29 | +* Fix numeric type preservation in ML inference query template substitution ([#4656](https://github.com/opensearch-project/ml-commons/pull/4656)) |
| 30 | +* Fix early exit in stats collector job when a connector is fetched for model details ([#4560](https://github.com/opensearch-project/ml-commons/pull/4560)) |
| 31 | +* Fix RestChatAgentIT teardown failure when AWS credentials are absent ([#4772](https://github.com/opensearch-project/ml-commons/pull/4772)) |
| 32 | +* Fix agent_id parameter conflict by renaming to agent_id_log for logging to prevent infinite loop in AgentTool ([#4762](https://github.com/opensearch-project/ml-commons/pull/4762)) |
| 33 | +* Fix MCP connector setting not being respected for Agent V2 ([#4739](https://github.com/opensearch-project/ml-commons/pull/4739)) |
| 34 | +* Fix incorrect error codes when deleting memory containers and context management templates ([#4723](https://github.com/opensearch-project/ml-commons/pull/4723)) |
| 35 | +* Fix error handling to use OpenSearchException instead of OpenSearchStatusException for broader 4XX client error coverage ([#4725](https://github.com/opensearch-project/ml-commons/pull/4725)) |
| 36 | +* Fix error code for delete context management template API to return 404 instead of 500 ([#4701](https://github.com/opensearch-project/ml-commons/pull/4701)) |
| 37 | +* Fix context restoration bug where user information was missing ([#4730](https://github.com/opensearch-project/ml-commons/pull/4730)) |
| 38 | +* Fix unsupported operation issue when putting agent ID into immutable map ([#4733](https://github.com/opensearch-project/ml-commons/pull/4733)) |
| 39 | +* Fix Cohere integration test timeouts by increasing timeout to 120s and adding reachability checks ([#4767](https://github.com/opensearch-project/ml-commons/pull/4767)) |
| 40 | + |
| 41 | +### Infrastructure |
| 42 | +* Fix ML build to adapt to Gradle shadow plugin v9 upgrade and make ml-commons FIPS build param aware ([#4654](https://github.com/opensearch-project/ml-commons/pull/4654)) |
| 43 | +* Enable FIPS flag by default on build/run ([#4719](https://github.com/opensearch-project/ml-commons/pull/4719)) |
| 44 | +* Onboard code diff analyzer and reviewer for ml-commons ([#4666](https://github.com/opensearch-project/ml-commons/pull/4666)) |
| 45 | +* Optimize integration test setup to eliminate redundant per-test work, reducing execution time by ~50% ([#4667](https://github.com/opensearch-project/ml-commons/pull/4667)) |
| 46 | +* Quote FIPS crypto standard parameter in CI workflow files for consistency ([#4659](https://github.com/opensearch-project/ml-commons/pull/4659)) |
| 47 | +* Improve CI test stability by skipping unreachable OpenAI tests and fixing flaky IndexUtilsTests ([#4668](https://github.com/opensearch-project/ml-commons/pull/4668)) |
| 48 | +* Prevent SearchModelGroupITTests timeout by disabling dedicated masters and fix Bedrock connection pool exhaustion ([#4665](https://github.com/opensearch-project/ml-commons/pull/4665)) |
| 49 | +* Upgrade Bedrock Claude models in integration tests for higher rate limits ([#4742](https://github.com/opensearch-project/ml-commons/pull/4742)) |
| 50 | +* Rename resource-action-groups.yml to resource-access-levels.yml to fix security checks ([#4737](https://github.com/opensearch-project/ml-commons/pull/4737)) |
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