Fixing test

Author: Tom McCormick

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestPread.java

@@ -603,7 +603,9 @@ public Void answer(InvocationOnMock invocation) throws Throwable {
       input.read(0, buffer, 0, 1024);
       Assert.fail("Reading the block should have thrown BlockMissingException");
     } catch (BlockMissingException e) {
-      assertEquals(3, input.getHedgedReadOpsLoopNumForTesting());
+      // The result of 9 is due to 2 blocks by 4 iterations plus one because hedgedReadOpsLoopNumForTesting
+      // is incremented at start of the loop.
+      assertEquals(9, input.getHedgedReadOpsLoopNumForTesting());
       assertTrue(metrics.getHedgedReadOps() == 0);
     } finally {
       Mockito.reset(injector);