[Backport 2.x] [Star Tree] Scaled Float Support

[opensearch-trigger-bot]

Backport 23f5c2f from #15442.

[github-actions]

❌ Gradle check result for e359c49: null

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❕ Gradle check result for e359c49: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.action.admin.indices.create.CreateIndexIT.testCreateAndDeleteIndexConcurrently
      1 org.opensearch.action.admin.indices.create.CreateIndexIT.classMethod

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Attention: Patch coverage is 77.77778% with 20 lines in your changes missing coverage. Please review.

Project coverage is 71.52%. Comparing base (d368e3b) to head (e359c49).
Report is 3 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...startree/builder/AbstractDocumentsFileManager.java	79.16%	2 Missing and 3 partials ⚠️
...datacube/startree/builder/BaseStarTreeBuilder.java	50.00%	1 Missing and 4 partials ⚠️
...ndex/compositeindex/datacube/DimensionFactory.java	20.00%	0 Missing and 4 partials ⚠️
...pensearch/index/mapper/ScaledFloatFieldMapper.java	60.00%	2 Missing ⚠️
...org/opensearch/index/mapper/NumberFieldMapper.java	87.50%	1 Missing and 1 partial ⚠️
...ube/startree/aggregators/MetricAggregatorInfo.java	75.00%	1 Missing ⚠️
...g/opensearch/index/mapper/DocCountFieldMapper.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #15660      +/-   ##
============================================
- Coverage     71.74%   71.52%   -0.22%     
+ Complexity    64157    64030     -127     
============================================
  Files          5250     5250              
  Lines        299925   299917       -8     
  Branches      43672    43678       +6     
============================================
- Hits         215176   214523     -653     
- Misses        66742    67393     +651     
+ Partials      18007    18001       -6     

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[opensearch-trigger-bot]

The backport to 2.17 failed:

The process '/usr/bin/git' failed with exit code 128

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-2.17 2.17
# Navigate to the new working tree
pushd ../.worktrees/backport-2.17
# Create a new branch
git switch --create backport/backport-15660-to-2.17
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 c801270b150083c0f15f8c1f70e3c6d8f731cac0
# Push it to GitHub
git push --set-upstream origin backport/backport-15660-to-2.17
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.17

Then, create a pull request where the base branch is 2.17 and the compare/head branch is backport/backport-15660-to-2.17.

[opensearch-trigger-bot]

The backport to 2.17 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-2.17 2.17
# Navigate to the new working tree
pushd ../.worktrees/backport-2.17
# Create a new branch
git switch --create backport/backport-15660-to-2.17
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 c801270b150083c0f15f8c1f70e3c6d8f731cac0
# Push it to GitHub
git push --set-upstream origin backport/backport-15660-to-2.17
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.17

Then, create a pull request where the base branch is 2.17 and the compare/head branch is backport/backport-15660-to-2.17.