svn commit: r1527651 - in /hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common: CHANGES.txt src/main/java/org/apache/hadoop/util/ReflectionUtils.java

[llu]

Author: llu
Date: Mon Sep 30 17:01:51 2013
New Revision: 1527651

URL: http://svn.apache.org/r1527651
Log:
HADOOP-9964. Fix deadlocks in TestHttpServer by synchronize 
ReflectionUtils.printThreadInfo. (Junping Du via llu)

Modified:
    
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
    
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java

Modified: 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt?rev=1527651&r1=1527650&r2=1527651&view=diff
==============================================================================
--- 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt 
(original)
+++ 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt 
Mon Sep 30 17:01:51 2013
@@ -61,6 +61,9 @@ Release 2.3.0 - UNRELEASED
 
   BUG FIXES
 
+    HADOOP-9964. Fix deadlocks in TestHttpServer by synchronize
+    ReflectionUtils.printThreadInfo. (Junping Du via llu)
+
     HADOOP-9582. Non-existent file to "hadoop fs -conf" doesn't throw error
     (Ashwin Shankar via jlowe)
 

Modified: 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java?rev=1527651&r1=1527650&r2=1527651&view=diff
==============================================================================
--- 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
 (original)
+++ 
hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
 Mon Sep 30 17:01:51 2013
@@ -154,7 +154,7 @@ public class ReflectionUtils {
    * @param stream the stream to
    * @param title a string title for the stack trace
    */
-  public static void printThreadInfo(PrintWriter stream,
+  public synchronized static void printThreadInfo(PrintWriter stream,
                                      String title) {
     final int STACK_DEPTH = 20;
     boolean contention = threadBean.isThreadContentionMonitoringEnabled();