Marc Handalian

**What do you want to do?** - [ ] Request a change to existing documentation - [x] Add new documentation - [ ] Report a technical problem with the documentation...

### Please describe the end goal of this project High level goal is to separate indexing and search traffic within remote store enabled clusters to achieve independent scalability and failure/workload...

[RW Separation] Add Allocation filter based on shard type.

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With https://github.com/opensearch-project/OpenSearch/issues/15368 we introduce changes for a new shardRouting property "searchOnly" to mark search only replica shards. Now we need to add logic to optionally allocate these shards to separate...

Initial commit to support a search only replica for RW separation.

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### Description Initial commit for the search only replica for reader writer split. This PR contains the following: 1. Introduce searchOnly flag on ShardRouting. 2. Add feature flag to enable/disable...

[RW Separation] Introduce allocation filter to control placement of search only replicas

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This is a continuation of https://github.com/opensearch-project/OpenSearch/issues/15445 that is still in review, raising this in draft for now. ### Description Introduce allocation filter to control placement of search only replicas. The...

### Describe the bug From: https://build.ci.opensearch.org/job/gradle-check/45305/testReport/junit/org.opensearch.cluster.routing/PrimaryAllocationIT/testPrimaryReplicaResyncFailed/ on PR https://github.com/opensearch-project/OpenSearch/pull/15410#issuecomment-2310783564 seed `-Dtests.seed=6656B3A5382F367D` ``` ./gradlew ':server:internalClusterTest' --tests "org.opensearch.cluster.routing.PrimaryAllocationIT.testPrimaryReplicaResyncFailed" -Dtests.seed=6656B3A5382F367D -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=en-LC -Dtests.timezone=IST -Druntime.java=21 ``` more trace: ``` java.lang.AssertionError: Expected: a...

### Describe the bug I noticed while writing some tests for DerivedFields that fuzzy is not returning similar results with derived fields as regular field type. ### Related component Search:Query...

Fix unclosed store references with SearchOnlyReplicaIT

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### Description This PR fixes a bug with node-node pull based replication where store refs are left open. If the replica does not know the DiscoveryNode of its primary we...