[opensearch-ci-bot]

Add release notes for 3.10.0

Borderline Calls

• Deprecate filter_by_backend_roles, targeting removal in 4.0 #2234: Placed in Enhancements — could be Maintenance since it only adds a deprecation marker with no behavior change, but it signals a meaningful API lifecycle event to operators.
• Register the findings indices as alerting system indices #2310: Placed in Enhancements — could be Bug Fixes since unprotected findings indices could be considered a security defect, but it's adding new system index protection rather than fixing broken functionality.
• Repair history write aliases after a snapshot restore #2312: Placed in Enhancements — could be Bug Fixes; chose Enhancements because this is new restore-support functionality rather than fixing a regression.
• Use the current query index for doc-level monitors after restore #2309: Placed in Enhancements — similar reasoning to Repair history write aliases after a snapshot restore #2312; this is new restore-resilience behavior.
• Reset stale last run context for doc-level monitors after restore #2287: Placed in Bug Fixes — could be Enhancements like the other restore PRs, but this one fixes monitors silently skipping documents which is more clearly a defect.
• Bump logback-core to 1.5.34 (CVE-2026-9828, CVE-2026-10532) #2261: Excluded — build-tooling-only dependency bump (logback in ktlint configuration) with no user-facing behavior change.
• [AUTO] Increment version to 3.10.0-SNAPSHOT #2235: Excluded — auto-increment version PR.
• fix: Restore the alerting unit test suite #2314: Placed in Infrastructure — contains a real bug fix in MonitorJobPoller.doStart and QueryLevelMonitorRunner, but the PR's primary purpose and scope is restoring the test suite. The production fixes are incidental to making tests pass.
• test: Correct the cause recorded for the acknowledged-alert test and drop the redundant action #2316: Placed in Infrastructure — purely a test correction follow-up with no production code changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.84%. Comparing base (778e7ce) to head (4687d62).
⚠️ Report is 257 commits behind head on main.

❌ Your project check has failed because the head coverage (67.84%) is below the target coverage (70.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2328      +/-   ##
============================================
+ Coverage     67.72%   67.84%   +0.11%     
- Complexity      105     1815    +1710     
============================================
  Files           160      170      +10     
  Lines         10343    14322    +3979     
  Branches       1522     2088     +566     
============================================
+ Hits           7005     9717    +2712     
- Misses         2672     3725    +1053     
- Partials        666      880     +214     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.