Upload translog.ckp file data as metadata to translog.tlog file for s3 remote store

[skumawat2025]

Description

This PR include below changes -

1. upload translog.ckp file data as object metadata of translog.tlog file for s3 remote storage.
2. changes for translog download flow. Including mixed indexes that might have translog file in remote (tlog + ckp) and (tlog with metadata).

Related Issues

Resolves

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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[github-actions]

❌ Gradle check result for e375bd1: FAILURE

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❌ Gradle check result for 4b25a94: FAILURE

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Compatibility status:

Checks if related components are compatible with change 84c8649

Incompatible components

Skipped components

Compatible components

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

[github-actions]

❌ Gradle check result for d046e97: FAILURE

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❌ Gradle check result for fd90f53: FAILURE

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❌ Gradle check result for 39bceaf: FAILURE

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❌ Gradle check result for cdeef37:

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❌ Gradle check result for 84c8649: FAILURE

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❕ Gradle check result for c56cf29: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.cluster.coordination.AwarenessAttributeDecommissionIT.testConcurrentDecommissionAction

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 44.79167% with 53 lines in your changes are missing coverage. Please review.

Project coverage is 71.48%. Comparing base (b15cb0c) to head (c56cf29).
Report is 190 commits behind head on main.

❗ Current head c56cf29 differs from pull request most recent head b22a58d. Consider uploading reports for the commit b22a58d to get more accurate results

Files	Patch %	Lines
...dex/translog/transfer/TranslogTransferManager.java	40.67%	32 Missing and 3 partials ⚠️
...ex/translog/transfer/BlobStoreTransferService.java	20.00%	11 Missing and 1 partial ⚠️
...ensearch/index/translog/transfer/FileSnapshot.java	69.23%	3 Missing and 1 partial ⚠️
...va/org/opensearch/repositories/s3/S3BlobStore.java	0.00%	1 Missing ⚠️
...g/opensearch/common/blobstore/FetchBlobResult.java	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #13206      +/-   ##
============================================
+ Coverage     71.42%   71.48%   +0.06%     
- Complexity    59978    60684     +706     
============================================
  Files          4985     5040      +55     
  Lines        282275   285463    +3188     
  Branches      40946    41340     +394     
============================================
+ Hits         201603   204065    +2462     
- Misses        63999    64494     +495     
- Partials      16673    16904     +231     

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❌ Gradle check result for 84f9c92:

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❌ Gradle check result for b22a58d: FAILURE

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