Index: lucene/join/src/test/org/apache/lucene/search/join/TestBlockJoin.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- lucene/join/src/test/org/apache/lucene/search/join/TestBlockJoin.java	(revision )
+++ lucene/join/src/test/org/apache/lucene/search/join/TestBlockJoin.java	(revision )
@@ -213,6 +213,59 @@
     dir.close();
   }
 
+  public void testBugCausedByRewritingTwice() throws IOException
+  {
+    final Directory dir = newDirectory();
+    final RandomIndexWriter w = new RandomIndexWriter(random(), dir);
+
+    final List<Document> docs = new ArrayList<Document>();
+
+    for (int i=0;i<283882;i++)
+    {
+      docs.clear();
+      docs.add(makeJob("ruby", i));
+      docs.add(makeJob("java", 283883-i));
+      docs.add(makeResume("Frank", "United States"));
+      w.addDocuments(docs);
+    }
+
+    IndexReader r = w.getReader();
+    w.close();
+    IndexSearcher s = newSearcher(r);
+
+    Query qc = NumericRangeQuery.newIntRange("year", 2007, 2007, true, true);
+
+    Filter parentsFilter = new FixedBitSetCachingWrapperFilter(new QueryWrapperFilter(new TermQuery(new Term("docType", "resume"))));
+
+    int h1 = qc.hashCode();
+    Query qw1 = qc.rewrite(r);
+    int h2 = qw1.hashCode();
+    Query qw2 = qw1.rewrite(r);
+    int h3 = qw2.hashCode();
+
+    assertTrue(h1!=h2);
+    assertTrue(h2 != h3);
+    assertTrue(h3 != h1);
+
+    ToParentBlockJoinQuery qp = new ToParentBlockJoinQuery(qc,parentsFilter,ScoreMode.Max);
+    int h4 = qp.hashCode();
+    Query qw = s.rewrite(qp);
+    int h5 = qw.hashCode();
+
+    assertTrue(h4 != h5);
+
+    final ToParentBlockJoinCollector c = new ToParentBlockJoinCollector(Sort.RELEVANCE, 10, true, true);
+
+    s.search(qp, c);
+    for (GroupDocs<Integer> group : c.getTopGroups(qp,Sort.INDEXORDER,0,10,0,true).groups)
+    {
+      assertEquals(group.totalHits,1);
+    }
+
+    r.close();
+    dir.close();
+  }
+
   protected QueryWrapperFilter skill(String skill) {
     return new QueryWrapperFilter(new TermQuery(new Term("skill", skill)));
   }