svn commit: r1393870 - /hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java

[to...@apache.org]

Author: todd
Date: Thu Oct  4 01:40:12 2012
New Revision: 1393870

URL: http://svn.apache.org/viewvc?rev=1393870&view=rev
Log:
HDFS-4004. TestJournalNode#testJournal fails because of test case execution order. Contributed by Chao Shi.

Modified:
    hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java

Modified: hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java?rev=1393870&r1=1393869&r2=1393870&view=diff
==============================================================================
--- hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java (original)
+++ hadoop/common/branches/HDFS-3077/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java Thu Oct  4 01:40:12 2012
@@ -25,6 +25,7 @@ import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.regex.Pattern;
 
 import org.apache.commons.logging.Log;
@@ -48,6 +49,8 @@ import com.google.common.collect.Sets;
  */
 public abstract class GenericTestUtils {
 
+  private static final AtomicInteger sequence = new AtomicInteger();
+
   /**
    * Extracts the name of the method where the invocation has happened
    * @return String name of the invoking method
@@ -55,6 +58,14 @@ public abstract class GenericTestUtils {
   public static String getMethodName() {
     return Thread.currentThread().getStackTrace()[2].getMethodName();
   }
+
+  /**
+   * Generates a process-wide unique sequence number.
+   * @return an unique sequence number
+   */
+  public static int uniqueSequenceId() {
+    return sequence.incrementAndGet();
+  }
   
   /**
    * Assert that a given file exists.