HDFS-10449. TestRollingFileSystemSinkWithHdfs#testFailedClose() fails on branch-2. Contributed by Takanobu Asanuma.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/metrics2/sink/TestRollingFileSystemSinkWithHdfs.java

@@ -187,8 +187,8 @@ public class TestRollingFileSystemSinkWithHdfs
     try {
       ms.stop();
 
-      fail("No exception was generated while stopping sink "
-          + "even though HDFS was unavailable");
+      assertTrue("No exception was generated while stopping sink "
+          + "even though HDFS was unavailable", MockSink.errored);
     } catch (MetricsException ex) {
       // Expected
     } finally {