fix unit test 2

Author: xiezhineng

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithHANameNodes.java

@@ -144,7 +144,7 @@ void doTest(Configuration conf, boolean withHA) throws Exception {
     TestBalancer.createFile(cluster, TestBalancer.filePath, totalUsedSpace
         / numOfDatanodes, (short) numOfDatanodes, 0);
 
-    boolean isRequestStandby = conf.getBoolean(
+    boolean isRequestStandby = !conf.getBoolean(
         DFS_NAMENODE_GETBLOCKS_CHECK_OPERATION_KEY,
         DFS_NAMENODE_GETBLOCKS_CHECK_OPERATION_DEFAULT);
     if (isRequestStandby) {