public virtual void TestThreadStarvationNoDeleteNRTReader() { IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)); conf.SetMergePolicy(Random.NextBoolean() ? NoMergePolicy.COMPOUND_FILES : NoMergePolicy.NO_COMPOUND_FILES); Directory d = NewDirectory(); CountdownEvent latch = new CountdownEvent(1); CountdownEvent signal = new CountdownEvent(1); LatchedIndexWriter _writer = new LatchedIndexWriter(d, conf, latch, signal); TrackingIndexWriter writer = new TrackingIndexWriter(_writer); SearcherManager manager = new SearcherManager(_writer, false, null); Document doc = new Document(); doc.Add(NewTextField("test", "test", Field.Store.YES)); writer.AddDocument(doc); manager.MaybeRefresh(); var t = new ThreadAnonymousClass(this, latch, signal, writer, manager); t.Start(); _writer.waitAfterUpdate = true; // wait in addDocument to let some reopens go through long lastGen = writer.UpdateDocument(new Term("foo", "bar"), doc); // once this returns the doc is already reflected in the last reopen assertFalse(manager.IsSearcherCurrent()); // false since there is a delete in the queue IndexSearcher searcher = manager.Acquire(); try { assertEquals(2, searcher.IndexReader.NumDocs); } finally { manager.Release(searcher); } ControlledRealTimeReopenThread <IndexSearcher> thread = new ControlledRealTimeReopenThread <IndexSearcher>(writer, manager, 0.01, 0.01); thread.Start(); // start reopening if (Verbose) { Console.WriteLine("waiting now for generation " + lastGen); } AtomicBoolean finished = new AtomicBoolean(false); var waiter = new ThreadAnonymousClass2(this, lastGen, thread, finished); waiter.Start(); manager.MaybeRefresh(); waiter.Join(1000); if (!finished) { waiter.Interrupt(); fail("thread deadlocked on waitForGeneration"); } thread.Dispose(); thread.Join(); IOUtils.Dispose(manager, _writer, d); }