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[Segment Replication] Update shard promotion algorithm to consider replica checkpoints.

6

With segment replication we would like to avoid situations replicas contain a segment that is different from the primary's version. After a read-only replica is promoted as the new primary,...

mch2

With https://github.com/opensearch-project/OpenSearch/pull/4135 and #3989, basic failover support is added for shards with segment replication enabled. However, this change does not consider what happens to ongoing or incoming copy events during...

mch2

[Segment Replication] Swap replica to writeable engine during failover.

1

As part of #2212, after a new primary has been selected we will need to convert its engine from an NRTReplicationEngine to InternalEngine. The logic we are looking for here...

mch2

Change the "Master" nomenclature

26

**Is your feature request related to a problem? Please describe.** Coming from https://github.com/opensearch-project/OpenSearch/issues/2589. **Describe the solution you'd like** Change all code, parameters, APIs, and documentation to refer to "leader" nodes...

Jon-AtAWS

[BUG] Data corruption on an actively written primary shard can lead to failing all replicas.

14

**Describe the bug** When data corruption is detected on primary, [the engine fails](https://github.com/opensearch-project/OpenSearch/blob/e7d6dcd86765c49fd6a1c43911a90a1c9dd362df/server/src/main/java/org/opensearch/index/engine/InternalEngine.java#L1889). This in turn results in [failing primary shard](https://github.com/opensearch-project/OpenSearch/blob/e7d6dcd86765c49fd6a1c43911a90a1c9dd362df/server/src/main/java/org/opensearch/indices/cluster/IndicesClusterStateService.java#L765) and [closing it](https://github.com/opensearch-project/OpenSearch/blob/e7d6dcd86765c49fd6a1c43911a90a1c9dd362df/server/src/main/java/org/opensearch/indices/cluster/IndicesClusterStateService.java#L729). Closing the shard also causes [closing](https://github.com/opensearch-project/OpenSearch/blob/e7d6dcd86765c49fd6a1c43911a90a1c9dd362df/server/src/main/java/org/opensearch/index/shard/IndexShard.java#L1383)...

itiyamas

Add workflow for changelog verification

3

Signed-off-by: Kunal Kotwani ### Description - The changes under this PR build on adding a changelog enforcer using the GHA [`Changelog Enforcer`](https://github.com/marketplace/actions/changelog-enforcer) following the [Keep A Changelog](https://keepachangelog.com/en/1.0.0/) format - What...

kotwanikunal

Adding interfaces in Search Module to allow plugins to register their aggregations as part of Composite Aggregations

2

### Description Composite Aggregation, is a multi-bucket aggregation that creates composite buckets from different sources. Currently in OpenSearch we support [4 aggregations](https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/search/aggregations/bucket/composite/CompositeAggregationBuilder.java#L86-L89) as part of Composite Aggregation. 1. Terms Aggregation...

navneet1v

[Backport 1.x] Correctly ignore depandabot branches during push

2

Backport 27c54934cde5c90ad2e4497c96fc8dc8d7fb251d from #4077

opensearch-trigger-bot[bot]

[Backport 1.3] Correctly ignore depandabot branches during push

2

Backport 27c54934cde5c90ad2e4497c96fc8dc8d7fb251d from #4077

opensearch-trigger-bot[bot]

Add ppc64le architecture

7

Add ppc64le architecture for the current architecture check. ### Description Ability to build OpenSearch on ppc64le architecture ### Issues Resolved https://github.com/opensearch-project/OpenSearch/issues/1303 ### Check List - [ ] New functionality includes...

helix-loop