Better plural stemmer than minimal_english

[nknize]

This originated from elastic/elasticsearch#42892 originally authored by @markharwood (nice job Mark!). The PR is licensed ALv2 and never found a home in Elasticsearch. The improvements over the buggy lucene implementation are substantial so I'm opening a PR to include it in OpenSearch 2.4.

[nknize]

@markharwood - do you think this TokenFilter should eventually make it's way back into lucene?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/4399/
• CommitID: a37e76e

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/4398/
• CommitID: 2388b31

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/4407/
• CommitID: ad69f59

[markharwood]

@markharwood - do you think this TokenFilter should eventually make it's way back into lucene?

Thanks for picking this up, Nick. Yes, I think this would be a natural fit as a Lucene contribution.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/4493/
• CommitID: 41e7377

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-4738-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 c92846d0ae121db54ce740790df75b36a24f804e
# Push it to GitHub
git push --set-upstream origin backport/backport-4738-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-4738-to-2.x.

[nknize]

Yes, I think this would be a natural fit as a Lucene contribution.

Thanks @markharwood!!! Maybe we incubate this here in OpenSearch and then look at contributing it back to lucene. Let us know if you want to contribute it back, or someone here can and we'll copy you on the PR.