/// <summary>test</summary> private void PrintStorages(FSImage image) { FSImageTestUtil.LogStorageContents(Log, image.GetStorage()); }
/// <exception cref="System.Exception"/> public virtual void TestCancelSaveNamespace() { Configuration conf = GetConf(); NameNode.InitMetrics(conf, HdfsServerConstants.NamenodeRole.Namenode); DFSTestUtil.FormatNameNode(conf); FSNamesystem fsn = FSNamesystem.LoadFromDisk(conf); // Replace the FSImage with a spy FSImage image = fsn.GetFSImage(); NNStorage storage = image.GetStorage(); storage.Close(); // unlock any directories that FSNamesystem's initialization may have locked storage.SetStorageDirectories(FSNamesystem.GetNamespaceDirs(conf), FSNamesystem.GetNamespaceEditsDirs (conf)); FSNamesystem spyFsn = Org.Mockito.Mockito.Spy(fsn); FSNamesystem finalFsn = spyFsn; GenericTestUtils.DelayAnswer delayer = new GenericTestUtils.DelayAnswer(Log); BlockIdManager bid = Org.Mockito.Mockito.Spy(spyFsn.GetBlockIdManager()); Whitebox.SetInternalState(finalFsn, "blockIdManager", bid); Org.Mockito.Mockito.DoAnswer(delayer).When(bid).GetGenerationStampV2(); ExecutorService pool = Executors.NewFixedThreadPool(2); try { DoAnEdit(fsn, 1); Canceler canceler = new Canceler(); // Save namespace fsn.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeEnter); try { Future <Void> saverFuture = pool.Submit(new _Callable_561(image, finalFsn, canceler )); // Wait until saveNamespace calls getGenerationStamp delayer.WaitForCall(); // then cancel the saveNamespace Future <Void> cancelFuture = pool.Submit(new _Callable_572(canceler)); // give the cancel call time to run Sharpen.Thread.Sleep(500); // allow saveNamespace to proceed - it should check the cancel flag after // this point and throw an exception delayer.Proceed(); cancelFuture.Get(); saverFuture.Get(); NUnit.Framework.Assert.Fail("saveNamespace did not fail even though cancelled!"); } catch (Exception t) { GenericTestUtils.AssertExceptionContains("SaveNamespaceCancelledException", t); } Log.Info("Successfully cancelled a saveNamespace"); // Check that we have only the original image and not any // cruft left over from half-finished images FSImageTestUtil.LogStorageContents(Log, storage); foreach (Storage.StorageDirectory sd in storage.DirIterable(null)) { FilePath curDir = sd.GetCurrentDir(); GenericTestUtils.AssertGlobEquals(curDir, "fsimage_.*", NNStorage.GetImageFileName (0), NNStorage.GetImageFileName(0) + MD5FileUtils.Md5Suffix); } } finally { fsn.Close(); } }