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HADOOP-9964. Fix deadlocks in TestHttpServer by synchronize ReflectionUtils.printThreadInfo. (Junping Du via llu) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1527650 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Luke Lu 2013-09-30 17:01:26 +00:00
parent e4154fc83a
commit d2e73b2775
2 changed files with 4 additions and 1 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -348,6 +348,9 @@ 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)

2
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java
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@ -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();