diff --git a/store/src/main/java/org/apache/rocketmq/store/lock/BackOffSpinLock.java b/store/src/main/java/org/apache/rocketmq/store/lock/BackOffSpinLock.java
index b0a532b45a2..3655ca89a69 100644
--- a/store/src/main/java/org/apache/rocketmq/store/lock/BackOffSpinLock.java
+++ b/store/src/main/java/org/apache/rocketmq/store/lock/BackOffSpinLock.java
@@ -21,7 +21,6 @@
 import java.time.LocalTime;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;