Added support for search replica to return segrep stats

vinaykpud commented 3 days ago

Description

In this PR we are adding,

Support for search replica to return its segrep stats
This doesn't change any of the existing implementation stats calculation for the regular replicas
For search replicas we are just calculating the stats using the difference between the computed checkpoint in the shard and latest pulled checkpoint from the remote store. So this stat will help to know if any problematic replications in search replica which is taking longer.

Related Issues

Resolves #15534
Related #15306

Check List

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

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github-actions[bot] commented 3 days ago

:x: Gradle check result for 39576c383ee22504c1f4f6085ecc1393539722dc: 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[bot] commented 2 days ago

:white_check_mark: Gradle check result for 39576c383ee22504c1f4f6085ecc1393539722dc: SUCCESS

codecov[bot] commented 2 days ago

Codecov Report

Attention: Patch coverage is 4.76190% with 60 lines in your changes missing coverage. Please review.

Project coverage is 72.04%. Comparing base (3b4fa0e) to head (39576c3). Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
...cation/TransportSegmentReplicationStatsAction.java	0.00%	44 Missing :warning:
...lication/SegmentReplicationShardStatsResponse.java	0.00%	10 Missing :warning:
...opensearch/index/SegmentReplicationShardStats.java	0.00%	3 Missing :warning:
...nsearch/index/SegmentReplicationPerGroupStats.java	0.00%	2 Missing :warning:
...h/indices/replication/SegmentReplicationState.java	66.66%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #16678 +/- ## ============================================ - Coverage 72.11% 72.04% -0.07% - Complexity 65192 65196 +4 ============================================ Files 5318 5318 Lines 303903 303967 +64 Branches 43970 43980 +10 ============================================ - Hits 219166 219003 -163 - Misses 66786 67042 +256 + Partials 17951 17922 -29 ```

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