예제 #1
0
        public virtual void TestMaybeRefreshBlockingLock()
        {
            // make sure that maybeRefreshBlocking releases the lock, otherwise other
            // threads cannot obtain it.
            Directory dir = NewDirectory();
            RandomIndexWriter w = new RandomIndexWriter(Random(), dir);
            w.Dispose();

            SearcherManager sm = new SearcherManager(dir, null);

            ThreadClass t = new ThreadAnonymousInnerClassHelper2(this, sm);
            t.Start();
            t.Join();

            // if maybeRefreshBlocking didn't release the lock, this will fail.
            Assert.IsTrue(sm.MaybeRefresh(), "failde to obtain the refreshLock!");

            sm.Dispose();
            dir.Dispose();
        }
        /*
         * LUCENE-3528 - NRTManager hangs in certain situations
         */
        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();
            CountDownLatch latch = new CountDownLatch(1);
            CountDownLatch signal = new CountDownLatch(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();
            ThreadClass t = new ThreadAnonymousInnerClassHelper(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

            Assert.IsFalse(manager.SearcherCurrent); // false since there is a delete in the queue

            IndexSearcher searcher = manager.Acquire();
            try
            {
                Assert.AreEqual(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);
            ThreadClass waiter = new ThreadAnonymousInnerClassHelper2(this, lastGen, thread, finished);
            waiter.Start();
            manager.MaybeRefresh();
            waiter.Join(1000);
            if (!finished.Get())
            {
                waiter.Interrupt();
                Assert.Fail("thread deadlocked on waitForGeneration");
            }
            thread.Dispose();
            thread.Join();
            IOUtils.Close(manager, _writer, d);
        }