Fix constraint bug which allows more primary shards than average prim…

…ary shards per index (opensearch-project#14908) Signed-off-by: Gaurav Bafna <[email protected]> Signed-off-by: Kaushal Kumar <[email protected]>
kaushalmahi12 · Jul 23, 2024 · ffc885e · ffc885e
1 parent 8369771
commit ffc885e
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diff --git a/server/src/main/java/org/opensearch/cluster/routing/allocation/ConstraintTypes.java b/server/src/main/java/org/opensearch/cluster/routing/allocation/ConstraintTypes.java
@@ -70,7 +70,7 @@ public static Predicate<Constraint.ConstraintParams> isPerIndexPrimaryShardsPerN
         return (params) -> {
             int perIndexPrimaryShardCount = params.getNode().numPrimaryShards(params.getIndex());
             int perIndexAllowedPrimaryShardCount = (int) Math.ceil(params.getBalancer().avgPrimaryShardsPerNode(params.getIndex()));
-            return perIndexPrimaryShardCount > perIndexAllowedPrimaryShardCount;
+            return perIndexPrimaryShardCount >= perIndexAllowedPrimaryShardCount;
         };
     }
 

diff --git a/...r/src/test/java/org/opensearch/cluster/routing/allocation/AllocationConstraintsTests.java b/...r/src/test/java/org/opensearch/cluster/routing/allocation/AllocationConstraintsTests.java
@@ -93,7 +93,7 @@ public void testPerIndexPrimaryShardsConstraint() {
 
         assertEquals(0, constraints.weight(balancer, node, indexName));
 
-        perIndexPrimaryShardCount = 3;
+        perIndexPrimaryShardCount = 2;
         when(node.numPrimaryShards(anyString())).thenReturn(perIndexPrimaryShardCount);
         assertEquals(CONSTRAINT_WEIGHT, constraints.weight(balancer, node, indexName));