*** old/test/lib/jdk/test/lib/cds/CDSTestUtils.java	Thu Sep  7 13:40:38 2017
--- new/test/lib/jdk/test/lib/cds/CDSTestUtils.java	Thu Sep  7 13:40:37 2017

*** 24,34 ****
--- 24,36 ----
  
  import java.io.IOException;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.PrintStream;
+ import java.text.SimpleDateFormat;
  import java.util.ArrayList;
+ import java.util.Date;
  import jdk.test.lib.Utils;
  import jdk.test.lib.process.OutputAnalyzer;
  import jdk.test.lib.process.ProcessTools;
  
  

*** 58,67 ****
--- 60,71 ----
  
      // Create bootstrap CDS archive
      public static OutputAnalyzer createArchive(CDSOptions opts)
          throws Exception {
  
+         startNewArchiveName();
+ 
          ArrayList<String> cmd = new ArrayList<String>();
  
          for (String p : opts.prefix) cmd.add(p);
  
          cmd.add("-Xshare:dump");

*** 326,338 ****
--- 330,352 ----
              testName = Utils.getTestName();
          }
          return testName;
      }
  
+     private static final SimpleDateFormat timeStampFormat =
+         new SimpleDateFormat("HH'h'mm'm'ss's'SSS");
+ 
+     private static String defaultArchiveName;
+ 
+     // Call this method to start new archive with new unique name
+     public static void startNewArchiveName() {
+         defaultArchiveName = getTestName() +
+             timeStampFormat.format(new Date()) + ".jsa";
+     }
  
      public static String getDefaultArchiveName() {
!         return getTestName() + ".jsa";
!         return defaultArchiveName;
      }
  
  
      // ===================== FILE ACCESS convenience methods
      public static File getOutputFile(String name) {