implement hashCode to avoid warning

3 files changed, 22 insertions, 0 deletions

diff --git a/vdslib/src/main/java/com/yahoo/vdslib/state/ClusterState.java b/vdslib/src/main/java/com/yahoo/vdslib/state/ClusterState.java
index a54f1971d21..a1c468a1372 100644
--- a/vdslib/src/main/java/com/yahoo/vdslib/state/ClusterState.java
+++ b/vdslib/src/main/java/com/yahoo/vdslib/state/ClusterState.java
@@ -66,6 +66,7 @@ public class ClusterState implements Cloneable {
         }
     }
 
+    @Override
     public boolean equals(Object o) {
         if (!(o instanceof ClusterState)) { return false; }
         ClusterState other = (ClusterState) o;
@@ -80,6 +81,16 @@ public class ClusterState implements Cloneable {
         return true;
     }
 
+    @Override
+    public int hashCode() {
+        int hc = version * 211;
+        hc += state.hashCode() * 97;
+        hc += distributionBits * 31;
+        hc += nodeCount.hashCode() * 7;
+        hc += nodeStates.hashCode();
+        return hc;
+    }
+
     @FunctionalInterface
     private interface NodeStateCmp {
         boolean similar(NodeType nodeType, NodeState lhs, NodeState rhs);
diff --git a/vdslib/src/main/java/com/yahoo/vdslib/state/DiskState.java b/vdslib/src/main/java/com/yahoo/vdslib/state/DiskState.java
index fb91af14f90..e0d9ad533f4 100644
--- a/vdslib/src/main/java/com/yahoo/vdslib/state/DiskState.java
+++ b/vdslib/src/main/java/com/yahoo/vdslib/state/DiskState.java
@@ -115,6 +115,7 @@ public class DiskState implements Cloneable {
         return sb.toString();
     }
 
+    @Override
     public boolean equals(Object o) {
         if (!(o instanceof DiskState)) { return false; }
         DiskState other = (DiskState) o;
@@ -125,4 +126,10 @@ public class DiskState implements Cloneable {
         }
         return false;
     }
+
+    @Override
+    public int hashCode() {
+        // NOTE: capacity cannot be part of the hashCode
+        return state.hashCode();
+    }
 }
diff --git a/vdslib/src/test/java/com/yahoo/vdslib/distribution/DistributionTestFactory.java b/vdslib/src/test/java/com/yahoo/vdslib/distribution/DistributionTestFactory.java
index abd6ef70d35..c3a8647d95b 100644
--- a/vdslib/src/test/java/com/yahoo/vdslib/distribution/DistributionTestFactory.java
+++ b/vdslib/src/test/java/com/yahoo/vdslib/distribution/DistributionTestFactory.java
@@ -51,6 +51,10 @@ public class DistributionTestFactory extends CrossPlatformTestFactory {
                     && failure.equals(t.failure));
         }
 
+        public int hashCode() {
+            return bucket.hashCode() + nodes.hashCode() + disks.hashCode();
+        }
+
         public String toString() {
             StringBuilder sb = new StringBuilder().append(bucket.toString());
             if (failure == Failure.NONE) {