[Segment Replication] Unmute testIndexingWithSegRep rolling upgrade test

[dreamer-89]

Description

1. Unmutes testIndexingWithSegRep as [Segment Replication] Add logic back to update tracking replication checkpoint on source #8560 (pre-requisite for segment replication bwc test) is merged to main and backported to 2.x.
2. Fixes flakyness by first asserting row count from _cat/segments API response to enable retry without which test fails with IndexOutOfBoundsException as mentioned here. [Edit]: Needed to remove rows with 0 doc count before adding assertion of number of rows to be multiple of shard copies.

Related Issues

Resolves: #7679

Test

Ran test in a loop for 500 100 iterations without failure on main and 2.x

main

for in in {1..100}; do ./gradlew ':qa:rolling-upgrade:v2.10.0#upgradedClusterTest' --tests "org.opensearch.upgrades.IndexingIT.testIndexingWithSegRep"; done;
...
(base) ubuntu@ip-172-31-49-145:~/OpenSearch$ grep "BUILD" /tmp/bwc | wc -l
100
(base) ubuntu@ip-172-31-49-145:~/OpenSearch$ grep "BUILD SUCCESS" /tmp/bwc | wc -l
100

Will test for 2.x separately in backport PR.
2.x
for in in {1..100}; do ./gradlew ':qa:rolling-upgrade:v2.8.1#upgradedClusterTest' --tests "org.opensearch.upgrades.IndexingIT.testIndexingWithSegRep" -Dtests.seed=395148148DFDD176 -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=sr-BA -Dtests.timezone=America/North_Dakota/Beulah -Druntime.java=17 >> /tmp/bwc_test; done
...
(base) ubuntu@ip-172-31-49-145:~/OpenSearch$ grep "BUILD SUCCESSFUL" /tmp/bwc_test | wc -l
100

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

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.

[opensearch-trigger-bot]

Compatibility status:

> Task :checkCompatibility
Checking compatibility for: https://github.com/opensearch-project/reporting.git with ref: main
Incompatible components: [https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/ml-commons.git]
Compatible components: [https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/reporting.git]

BUILD SUCCESSFUL in 25m 13s

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.repositories.azure.AzureBlobStoreRepositoryTests.testList
      1 org.opensearch.indices.replication.SegmentReplicationIT.testScrollWithConcurrentIndexAndSearch

• URL: https://build.ci.opensearch.org/job/gradle-check/21728/
• CommitID: 36f9ca5
  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

Merging #9079 (664e1af) into main (d916f9c) will increase coverage by 0.76%.
Report is 28 commits behind head on main.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #9079      +/-   ##
============================================
+ Coverage     70.97%   71.74%   +0.76%     
- Complexity    57195    57778     +583     
============================================
  Files          4765     4765              
  Lines        270334   270334              
  Branches      39538    39538              
============================================
+ Hits         191879   193951    +2072     
+ Misses        62282    60522    -1760     
+ Partials      16173    15861     -312     

see 481 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21749/
• CommitID: a973066
  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 (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.snapshots.CloneSnapshotIT.testCloneShallowSnapshotIndex

• URL: https://build.ci.opensearch.org/job/gradle-check/21845/
• CommitID: 37b474a
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21852/
• CommitID: 664e1af
  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 (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/21851/
• CommitID: 37b474a

[dreamer-89]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21852/
• CommitID: 664e1af
  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?

org.opensearch.transport.nio.SimpleMockNioTransportTests.testTracerLog

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.index.IndexServiceTests.testAsyncTranslogTrimTaskOnClosedIndex

• URL: https://build.ci.opensearch.org/job/gradle-check/21856/
• CommitID: 664e1af
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21862/
• CommitID: 664e1af
  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?

[Poojita-Raj]

Gradle Check (Jenkins) Run Completed with:

* **RESULT:** FAILURE ❌

* **URL:** https://build.ci.opensearch.org/job/gradle-check/21862/

* **CommitID:** [664e1af](https://github.com/opensearch-project/OpenSearch/commit/664e1af6e838b44e7dd2edafb3e717252e5f9456)
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure [a flaky test](https://github.com/opensearch-project/OpenSearch/blob/main/DEVELOPER_GUIDE.md#flaky-tests) unrelated to your change?

org.opensearch.snapshots.DeleteSnapshotIT.testDeleteMultipleShallowCopySnapshotsCase1

java.lang.AssertionError: 
Expected: is <2>
     but: was <1> 
     

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/22046/
• CommitID: 664e1af

[opensearch-trigger-bot]

Compatibility status:

> Task :checkCompatibility
Incompatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/security-analytics.git]
Compatible components: [https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git]

BUILD SUCCESSFUL in 24m 54s

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.remotestore.RemoteStoreStatsIT.testStatsOnShardUnassigned

• URL: https://build.ci.opensearch.org/job/gradle-check/22136/
• CommitID: 664e1af
  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-9079-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 f73aac93b78691dbf197d3fd35f7406fa8717e9c
# Push it to GitHub
git push --set-upstream origin backport/backport-9079-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-9079-to-2.x.