svn commit: r1507189 - /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java

[suresh]

Author: suresh
Date: Fri Jul 26 04:42:41 2013
New Revision: 1507189

URL: http://svn.apache.org/r1507189
Log:
HDFS-5016. Deadlock in pipeline recovery causes Datanode to be marked dead. 
Contributed by Suresh Srinivas.

Modified:
    
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java

Modified: 
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
URL: 
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java?rev=1507189&r1=1507188&r2=1507189&view=diff
==============================================================================
--- 
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
 (original)
+++ 
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
 Fri Jul 26 04:42:41 2013
@@ -907,4 +907,16 @@ public class StringUtils {
     buf.putLong(uuid.getLeastSignificantBits());
     return buf.array();
   }
+  
+  /**
+   * Get stack trace for a given thread.
+   */
+  public static String getStackTrace(Thread t) {
+    final StackTraceElement[] stackTrace = t.getStackTrace();
+    StringBuilder str = new StringBuilder();
+    for (StackTraceElement e : stackTrace) {
+      str.append(e.toString() + "\n");
+    }
+    return str.toString();
+  }
 }