From 4f3f9391b035d7f7e285c332770c6c1ede9a5a85 Mon Sep 17 00:00:00 2001
From: Sean Mackrory <mackrorysd@apache.org>
Date: Thu, 12 Jul 2018 16:45:07 +0200
Subject: [PATCH] HADOOP-15316. GenericTestUtils can exceed maxSleepTime.
 Contributed by Adam Antal.

---
 .../src/test/java/org/apache/hadoop/test/GenericTestUtils.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
index 3e9da1b45fd..01128940014 100644
--- a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
+++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
@@ -661,7 +661,7 @@ public SleepAnswer(int minSleepTime, int maxSleepTime) {
     public Object answer(InvocationOnMock invocation) throws Throwable {
       boolean interrupted = false;
       try {
-        Thread.sleep(r.nextInt(maxSleepTime) + minSleepTime);
+        Thread.sleep(r.nextInt(maxSleepTime - minSleepTime) + minSleepTime);
       } catch (InterruptedException ie) {
         interrupted = true;
       }