Cleanup Unreferenced file on segment merge failure

[RS146BIJAY]

Description

Describe the bug
Currently, during segment merge (both during auto merge and force merge), OpenSearch creates multiple temporary files while merging individual segment components. Once individual components of the segments are merged, IndexWriter creates a Compound file (*.cfs) containing all the Lucene components for a segment. At the end, OpenSearch deletes these temporary files.

Now, in case these temporary files consume all the space on the node (because enough amount of space is unavailable for segment merge to go through), segment merge will fail. Also, the files which got created during segment merge do not get cleaned up and it continues to occupy space on the node. This can cause FSHealthService checks to fail for this node, ultimately causing these nodes to be removed from cluster.

Expected behavior
In case Force segment merge fails, OpenSearch should remove the temporary files created during segment merge.

Related Issues

#5710
#8024

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.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.http.SearchRestCancellationIT.testAutomaticCancellationMultiSearchDuringFetchPhase

• URL: https://build.ci.opensearch.org/job/gradle-check/23209/
• CommitID: f623eeb
  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 #9483 (e0f15c9) into main (ebdffbb) will decrease coverage by 0.20%.
Report is 3 commits behind head on main.
The diff coverage is 29.09%.

@@             Coverage Diff              @@
##               main    #9483      +/-   ##
============================================
- Coverage     71.20%   71.00%   -0.20%     
+ Complexity    57474    57403      -71     
============================================
  Files          4776     4778       +2     
  Lines        270815   270916     +101     
  Branches      39584    39591       +7     
============================================
- Hits         192835   192370     -465     
- Misses        61741    62330     +589     
+ Partials      16239    16216      -23     

Files Changed	Coverage Δ
...earch/script/expression/ExpressionScoreScript.java	0.00% <0.00%> (ø)
...arch/script/expression/ExpressionScriptEngine.java	33.99% <ø> (ø)
...earch/example/expertscript/ExpertScriptPlugin.java	0.00% <0.00%> (ø)
...pensearch/common/settings/IndexScopedSettings.java	100.00% <ø> (ø)
...ry/functionscore/TermFrequencyFunctionFactory.java	0.00% <0.00%> (ø)
...n/java/org/opensearch/script/ScoreScriptUtils.java	1.43% <0.00%> (-0.31%)	⬇️
...nsearch/search/lookup/LeafTermFrequencyLookup.java	35.71% <35.71%> (ø)
...c/main/java/org/opensearch/script/ScoreScript.java	56.92% <50.00%> (-1.15%)	⬇️
.../main/java/org/opensearch/index/engine/Engine.java	74.50% <72.22%> (-0.07%)	⬇️
...nsearch/painless/action/PainlessExecuteAction.java	77.58% <100.00%> (+0.29%)	⬆️
... and 3 more

... and 480 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.pit.DeletePitMultiNodeIT.testDeleteWhileSearch

• URL: https://build.ci.opensearch.org/job/gradle-check/23210/
• CommitID: dec0641
  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/23266/
• CommitID: a947fbb
  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?

[opensearch-trigger-bot]

Compatibility status:

Checks if related components are compatible with change 5d3633c

Incompatible components

Incompatible components: [https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/security-analytics.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/job-scheduler.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/geospatial.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git]

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.smoketest.SmokeTestMultiNodeClientYamlTestSuiteIT.test {yaml=pit/10_basic/Delete all}
      1 org.opensearch.search.pit.DeletePitMultiNodeIT.testDeleteWhileSearch
      1 org.opensearch.repositories.azure.AzureBlobStoreRepositoryTests.testMultipleSnapshotAndRollback

• URL: https://build.ci.opensearch.org/job/gradle-check/23268/
• CommitID: 9737548
  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]

Compatibility status:

Checks if related components are compatible with change 5d3633c

Incompatible components

Incompatible components: [https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/security-analytics.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/job-scheduler.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/geospatial.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git]

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/23273/
• CommitID: e0f15c9

[RS146BIJAY]

Code coverage failure seems to be coming from this PR: #9081