[Backport 2.5] Add support for API versioning and fail open in weighted shard routing

CHANGELOG.md

@@ -14,14 +14,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Update to Gradle 7.6 ([#5382](https://github.com/opensearch-project/OpenSearch/pull/5382))
 - Reject bulk requests with invalid actions ([#5299](https://github.com/opensearch-project/OpenSearch/issues/5299))
 - Add max_shard_size parameter for shrink API ([#5229](https://github.com/opensearch-project/OpenSearch/pull/5229))
+- Support to fail open requests on search shard failures with weighted traffic routing ([#5072](https://github.com/opensearch-project/OpenSearch/pull/5072))
 - Added jackson dependency to server ([#5366] (https://github.com/opensearch-project/OpenSearch/pull/5366))
 - Adding support to register settings dynamically ([#5495](https://github.com/opensearch-project/OpenSearch/pull/5495))
 - Adding auto release workflow ([#5582](https://github.com/opensearch-project/OpenSearch/pull/5582))
 - Added experimental support for extensions ([#5347](https://github.com/opensearch-project/OpenSearch/pull/5347)), ([#5518](https://github.com/opensearch-project/OpenSearch/pull/5518)), ([#5597](https://github.com/opensearch-project/OpenSearch/pull/5597)), ([#5615](https://github.com/opensearch-project/OpenSearch/pull/5615)))
 - Add CI bundle pattern to distribution download ([#5348](https://github.com/opensearch-project/OpenSearch/pull/5348))
+- Support versioning for Weighted routing apis([#5255](https://github.com/opensearch-project/OpenSearch/pull/5255))
 - Added @gbbafna as an OpenSearch maintainer ([#5668](https://github.com/opensearch-project/OpenSearch/pull/5668))
 - Experimental support for extended backward compatiblity in searchable snapshots ([#5429](https://github.com/opensearch-project/OpenSearch/pull/5429))
 - Added Request level Durability using Remote Translog functionality ([#5757](https://github.com/opensearch-project/OpenSearch/pull/5757))
+- Add support for discovered cluster manager and remove local weights ([#5680](https://github.com/opensearch-project/OpenSearch/pull/5680))
 
 ### Dependencies
 - Bump bcpg-fips from 1.0.5.1 to 1.0.7.1 ([#5148](https://github.com/opensearch-project/OpenSearch/pull/5148))

qa/smoke-test-http/src/test/java/org/opensearch/http/AwarenessAttributeDecommissionRestIT.java

@@ -91,6 +91,7 @@ public void testRestStatusForAcknowledgedDecommission() throws IOException {
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 

server/src/internalClusterTest/java/org/opensearch/cluster/coordination/AwarenessAttributeDecommissionIT.java

@@ -223,6 +223,7 @@ public void testInvariantsAndLogsOnDecommissionedNodes() throws Exception {
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -453,6 +454,7 @@ private void assertNodesRemovedAfterZoneDecommission(boolean originalClusterMana
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -565,6 +567,7 @@ public void testDecommissionFailedWhenDifferentAttributeAlreadyDecommissioned()
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -649,6 +652,7 @@ public void testDecommissionStatusUpdatePublishedToAllNodes() throws ExecutionEx
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -769,6 +773,7 @@ public void testDecommissionFailedWhenAttributeNotWeighedAway() throws Exception
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -809,6 +814,7 @@ public void testDecommissionFailedWithOnlyOneAttributeValueForLeader() throws Ex
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());
 
@@ -922,6 +928,7 @@ public void testDecommissionAcknowledgedIfWeightsNotSetForNonRoutingNode() throw
             .cluster()
             .prepareWeightedRouting()
             .setWeightedRouting(weightedRouting)
+            .setVersion(-1)
             .get();
         assertTrue(weightedRoutingResponse.isAcknowledged());