HDFS-17342. Fix UT

Author: haiyang1987

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java

@@ -2066,7 +2066,7 @@ public void delay() {
           }
         });
 
-        Future<?> moveBlockFuture = executorService.submit(() -> {
+        Future<?> finalizeBlockFuture = executorService.submit(() -> {
           try {
             // Submit tasks for finalizing block.
             Thread.sleep(1000);
@@ -2078,7 +2078,7 @@ public void delay() {
 
         // Wait for both tasks to complete.
         blockReaderFuture.get();
-        moveBlockFuture.get();
+        finalizeBlockFuture.get();
       } finally {
         executorService.shutdown();
       }