Update modules/core/src/main/java/org/apache/ignite/topology/MdcTopologyValidator.java

anton-vinogradov · sergey-chugunov-1985 · web-flow · commit afafc31860ea · 2025-10-29T17:44:30.000+03:00
Co-authored-by: Sergey Chugunov &lt;sergey.chugunov@gmail.com&gt;
diff --git a/modules/core/src/main/java/org/apache/ignite/topology/MdcTopologyValidator.java b/modules/core/src/main/java/org/apache/ignite/topology/MdcTopologyValidator.java
@@ -96,7 +96,7 @@ public void checkConfiguration() {
             throw new IllegalStateException("Please provide a non-empty set of datacenters.");
 
         if (mainDc != null && dcs != null && dcs.size() % 2 == 1)
-            throw new IllegalStateException("Datacenters count must be even when main datacenter is set.");
+            throw new IllegalStateException("Uneven number of datacenters cannot be used along with main datacenter. Please remove main datacenter setting or specify even number of datacenters.");
     }
 
     /** {@inheritDoc} */

Original file line number	Diff line number	Diff line change
`@@ -96,7 +96,7 @@ public void checkConfiguration() {`
`96`	`96`	`throw new IllegalStateException("Please provide a non-empty set of datacenters.");`
`97`	`97`
`98`	`98`	`if (mainDc != null && dcs != null && dcs.size() % 2 == 1)`
`99`		`- throw new IllegalStateException("Datacenters count must be even when main datacenter is set.");`
	`99`	`+ throw new IllegalStateException("Uneven number of datacenters cannot be used along with main datacenter. Please remove main datacenter setting or specify even number of datacenters.");`
`100`	`100`	`}`
`101`	`101`
`102`	`102`	`/** {@inheritDoc} */`