Merge 4.9 into master

[AlexRuiz7]

Description

DO NOT MERGE.

This branch cannot be merged into master due to unrelated Git histories (master and 4.9.0 are based on different versions of OpenSearch). Merging is not possible. The merge-4.9-into-master branch has to replace the master branch, and the current master branch has to be removed.

Issues Resolved

195

Check List

• [ ] New functionality includes testing.
  • [ ] All tests pass
• [ ] New functionality has been documented.
  • [ ] New functionality has javadoc added
• [ ] Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• [ ] Commits are signed per the DCO using --signoff
• [ ] Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• [ ] Public documentation issue/PR created

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.