Rishikesh

[Segment Replication] Adding PrimaryMode check before publishing checkpoint.

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Signed-off-by: Rishikesh1159 ### Description This PR adds a check to publish checkpoint only in primary mode. ### Issues Resolved #3923 By submitting this pull request, I confirm that my contribution...

[Backport 2.x] [Segment Replication] Backport PR's : #3525 #3533 #3540 #3943 #3963 From main branch

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### Description This PR backports following 5 PR's from main branch: 1. #3525. 2. #3533. 3. #3540. 4. #3943 5. #3963 By submitting this pull request, I confirm that my...

[Segment Replication] Review Cross Cluster Replication compatibility with Segment Replication Enabled

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**Is your feature request related to a problem? Please describe.** As part of this issue, we want to identify if Segment Replication enabled cluster have any issues with Cross Cluster...

**Is your feature request related to a problem? Please describe.** Currently we just log all the metrics related to segment replication. Instead we need to create an API to fetch...

[Searchable Snapshot] Fix bug of Searchable Snapshot Dependency on repository chunk_size

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### Description This PR is still in draft version and purpose of this PR is to get some feedback on the approach for resolving the issue. Once approach is finalized...

[Segment Replication] Add random replication strategy

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### Description This PR enables the support of random replication strategy for integration tests. This helps to increase the segment replication test coverage by randomly selecting replication strategy for tests...

Verify Usage of Opensearch Core System and Hidden Indices

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### Description/Concept of System Indices and Hidden Indices on Opensearch core: **System Index** - An index must extend [system index plugin](https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/plugins/SystemIndexPlugin.java) for a index to be called as system index....

### Description/Concept of System Indices and Hidden Indices on Opensearch core: **System Index** - An index must extend [system index plugin](https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/plugins/SystemIndexPlugin.java) for a index to be called as system index....

### Description/Concept of System Indices and Hidden Indices on Opensearch core: **System Index** - An index must extend [system index plugin](https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/plugins/SystemIndexPlugin.java) for a index to be called as system index....

### Description/Concept of System Indices and Hidden Indices on Opensearch core: **System Index** - An index must extend [system index plugin](https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/plugins/SystemIndexPlugin.java) for a index to be called as system index....