diff --git a/common/src/main/java/org/astraea/common/cost/MigrationCost.java b/common/src/main/java/org/astraea/common/cost/MigrationCost.java
index 5083fced65..46df3bb27c 100644
--- a/common/src/main/java/org/astraea/common/cost/MigrationCost.java
+++ b/common/src/main/java/org/astraea/common/cost/MigrationCost.java
@@ -126,6 +126,10 @@ public static Map<Integer, Long> brokerMigrationSecond(
                     Map.Entry::getKey,
                     brokerSize ->
                         brokerSize.getValue() / brokerOutRate.get(brokerSize.getKey()).orElse(0)));
+    brokerInRate.forEach(
+        (b, rate) -> System.out.println("broker: " + b + " inRate: " + rate.orElse(0)));
+    brokerOutRate.forEach(
+        (b, rate) -> System.out.println("broker: " + b + " OutRate: " + rate.orElse(0)));
     return Stream.concat(before.nodes().stream(), after.nodes().stream())
         .map(NodeInfo::id)
         .distinct()
diff --git a/common/src/main/java/org/astraea/common/cost/PartitionMigrateTimeCost.java b/common/src/main/java/org/astraea/common/cost/PartitionMigrateTimeCost.java
index de58591d6c..86f3665740 100644
--- a/common/src/main/java/org/astraea/common/cost/PartitionMigrateTimeCost.java
+++ b/common/src/main/java/org/astraea/common/cost/PartitionMigrateTimeCost.java
@@ -76,20 +76,20 @@ public MetricSensor metricSensor() {
       var inRate = maxRateSensor.measure(REPLICATION_IN_RATE);
       var outRate = maxRateSensor.measure(REPLICATION_OUT_RATE);
       return List.of(
-          (MaxReplicationInRateBean)
+          new MaxReplicationInRateBean(
               () ->
                   new BeanObject(
                       newInMetrics.beanObject().domainName(),
                       newInMetrics.beanObject().properties(),
                       Map.of(STATISTICS_RATE_KEY, Math.max(oldInRate.orElse(0), inRate)),
-                      current.toMillis()),
-          (MaxReplicationOutRateBean)
+                      current.toMillis())),
+          new MaxReplicationOutRateBean(
               () ->
                   new BeanObject(
                       newOutMetrics.beanObject().domainName(),
                       newOutMetrics.beanObject().properties(),
                       Map.of(STATISTICS_RATE_KEY, Math.max(oldOutRate.orElse(0), outRate)),
-                      current.toMillis()));
+                      current.toMillis())));
     };
   }
 
@@ -103,7 +103,17 @@ public MoveCost moveCost(ClusterInfo before, ClusterInfo after, ClusterBean clus
     return () -> planMigrateSecond > this.maxMigrateTime.getSeconds();
   }
 
-  public interface MaxReplicationInRateBean extends HasMaxRate {}
+  public record MaxReplicationInRateBean(HasMaxRate hasMaxRate) implements HasMaxRate {
+    @Override
+    public BeanObject beanObject() {
+      return hasMaxRate.beanObject();
+    }
+  }
 
-  public interface MaxReplicationOutRateBean extends HasMaxRate {}
+  public record MaxReplicationOutRateBean(HasMaxRate hasMaxRate) implements HasMaxRate {
+    @Override
+    public BeanObject beanObject() {
+      return hasMaxRate.beanObject();
+    }
+  }
 }
diff --git a/common/src/test/java/org/astraea/common/cost/PartitionMigrateTimeCostTest.java b/common/src/test/java/org/astraea/common/cost/PartitionMigrateTimeCostTest.java
index 93a542cc52..52e4a2fa44 100644
--- a/common/src/test/java/org/astraea/common/cost/PartitionMigrateTimeCostTest.java
+++ b/common/src/test/java/org/astraea/common/cost/PartitionMigrateTimeCostTest.java
@@ -168,15 +168,15 @@ private static ClusterBean clusterBean() {
         Map.of(
             0,
             List.of(
-                (PartitionMigrateTimeCost.MaxReplicationInRateBean) () -> inBean0,
-                (PartitionMigrateTimeCost.MaxReplicationOutRateBean) () -> outBean0),
+                new PartitionMigrateTimeCost.MaxReplicationInRateBean(() -> inBean0),
+                new PartitionMigrateTimeCost.MaxReplicationOutRateBean(() -> outBean0)),
             1,
             List.of(
-                (PartitionMigrateTimeCost.MaxReplicationInRateBean) () -> inBean1,
-                (PartitionMigrateTimeCost.MaxReplicationOutRateBean) () -> outBean1),
+                new PartitionMigrateTimeCost.MaxReplicationInRateBean(() -> inBean1),
+                new PartitionMigrateTimeCost.MaxReplicationOutRateBean(() -> outBean1)),
             2,
             List.of(
-                (PartitionMigrateTimeCost.MaxReplicationInRateBean) () -> inBean2,
-                (PartitionMigrateTimeCost.MaxReplicationOutRateBean) () -> outBean2)));
+                new PartitionMigrateTimeCost.MaxReplicationInRateBean(() -> inBean2),
+                new PartitionMigrateTimeCost.MaxReplicationOutRateBean(() -> outBean2))));
   }
 }