Index: lucene/src/test/org/apache/lucene/util/LuceneTestCase.java
===================================================================
--- lucene/src/test/org/apache/lucene/util/LuceneTestCase.java	(revision 1023040)
+++ lucene/src/test/org/apache/lucene/util/LuceneTestCase.java	(working copy)
@@ -759,8 +759,20 @@
   // We get here from InterceptTestCaseEvents on the 'failed' event....
   public void reportAdditionalFailureInfo() {
     System.out.println("NOTE: reproduce with: ant test -Dtestcase=" + getClass().getSimpleName() 
-        + " -Dtestmethod=" + getName() + " -Dtests.seed=" + new TwoLongs(staticSeed, seed));
+        + " -Dtestmethod=" + getName() + " -Dtests.seed=" + new TwoLongs(staticSeed, seed)
+        + reproduceWithExtraParams());
   }
+  
+  // extra params that were overridden needed to reproduce the command
+  private String reproduceWithExtraParams() {
+    StringBuilder sb = new StringBuilder();
+    if (!TEST_CODEC.equals("random")) sb.append(" -Dtests.codec=" + TEST_CODEC);
+    if (!TEST_LOCALE.equals("random")) sb.append(" -Dtests.locale=" + TEST_LOCALE);
+    if (!TEST_TIMEZONE.equals("random")) sb.append(" -Dtests.timezone=" + TEST_LOCALE);
+    if (!TEST_DIRECTORY.equals("random")) sb.append(" -Dtests.directory=" + TEST_DIRECTORY);
+    if (RANDOM_MULTIPLIER > 1) sb.append(" -Dtests.multiplier=" + RANDOM_MULTIPLIER);
+    return sb.toString();
+  }
 
   // recorded seed: for beforeClass
   private static long staticSeed;