update

core/client/fs/src/main/java/alluxio/client/file/FileSystemContext.java

@@ -64,8 +64,6 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicReference;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantLock;
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.GuardedBy;
 import javax.annotation.concurrent.ThreadSafe;
@@ -161,14 +159,12 @@ public class FileSystemContext implements Closeable {
   /** Whether to do URI scheme validation for file systems using this context.  */
   private boolean mUriValidationEnabled = true;
 
-  private final Lock mWorkerInfoListLock = new ReentrantLock();
-
   /** Cached map for workers. */
   @GuardedBy("mWorkerInfoList")
   private final AtomicReference<List<BlockWorkerInfo>> mWorkerInfoList = new AtomicReference<>();
 
   /** The policy to refresh workers list. */
-  @GuardedBy("this")
+  @GuardedBy("mWorkerInfoList")
   private final RefreshPolicy mWorkerRefreshPolicy;
 
   private final Map<Class, BlockLocationPolicy> mBlockLocationPolicyMap;