Optimizing get indices to segments map calculations for IndicesSegmen…

[gargharsh3134]

Description

Removes extra computations to get the indices to IndexSegments map which will help reduce the latencies for _cat/segments and other REST APIs

Related Issues

Resolves #14720

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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.

[github-actions]

✅ Gradle check result for cdc2809: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.97%. Comparing base (a60b668) to head (4990514).
Report is 15 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #14717      +/-   ##
============================================
+ Coverage     71.93%   71.97%   +0.03%     
- Complexity    63995    64048      +53     
============================================
  Files          5259     5259              
  Lines        299435   299437       +2     
  Branches      43270    43269       -1     
============================================
+ Hits         215412   215532     +120     
+ Misses        66287    66221      -66     
+ Partials      17736    17684      -52     

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[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.

[github-actions]

❌ Gradle check result for 637dccb: FAILURE

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 241ca48: FAILURE

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?

[backslasht]

LGTM, thanks for making the changes @gargharsh3134

[github-actions]

❌ Gradle check result for ccca45e: FAILURE

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?

[shwetathareja]

@gargharsh3134 observing this error

> Task :server:forbiddenApisTest
Forbidden method invocation: java.util.Collections#shuffle(java.util.List) [Use java.util.Collections#shuffle(java.util.List, java.util.Random) with a reproducible source of randomness]
  in org.opensearch.action.admin.indices.segments.IndicesSegmentResponseTests (IndicesSegmentResponseTests.java:99)

[gargharsh3134]

@gargharsh3134 observing this error

> Task :server:forbiddenApisTest
Forbidden method invocation: java.util.Collections#shuffle(java.util.List) [Use java.util.Collections#shuffle(java.util.List, java.util.Random) with a reproducible source of randomness]
  in org.opensearch.action.admin.indices.segments.IndicesSegmentResponseTests (IndicesSegmentResponseTests.java:99)

Addressed in the latest commit. Thanks!

[github-actions]

❌ Gradle check result for 4990514: FAILURE

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 4990514: 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 4990514: FAILURE

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 4990514: FAILURE

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 4990514: UNSTABLE

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

[opensearch-trigger-bot]

The backport to 2.x failed:

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

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-14717-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d28fbc3bc2a4fbf0a70558e775e3f7a9e15d2617
# Push it to GitHub
git push --set-upstream origin backport/backport-14717-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-14717-to-2.x.