コード例 #1
0
        // expected because the old active will be unable to flush the
        // end-of-segment op since it is fenced
        /// <exception cref="System.IO.IOException"/>
        /// <exception cref="System.Exception"/>
        /// <exception cref="Org.Apache.Hadoop.Hdfs.Inotify.MissingEventsException"/>
        public virtual void TestReadEventsWithTimeout()
        {
            Configuration    conf    = new HdfsConfiguration();
            MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).Build();

            try
            {
                cluster.GetDfsCluster().WaitActive();
                cluster.GetDfsCluster().TransitionToActive(0);
                DFSClient client = new DFSClient(cluster.GetDfsCluster().GetNameNode(0).GetNameNodeAddress
                                                     (), conf);
                DFSInotifyEventInputStream eis = client.GetInotifyEventStream();
                ScheduledExecutorService   ex  = Executors.NewSingleThreadScheduledExecutor();
                ex.Schedule(new _Runnable_463(client), 1, TimeUnit.Seconds);
                // test will fail
                // a very generous wait period -- the edit will definitely have been
                // processed by the time this is up
                EventBatch batch = eis.Poll(5, TimeUnit.Seconds);
                NUnit.Framework.Assert.IsNotNull(batch);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Create);
                NUnit.Framework.Assert.AreEqual("/dir", ((Event.CreateEvent)batch.GetEvents()[0])
                                                .GetPath());
            }
            finally
            {
                cluster.Shutdown();
            }
        }
コード例 #2
0
        /// <exception cref="System.IO.IOException"/>
        /// <exception cref="Org.Apache.Hadoop.Hdfs.Inotify.MissingEventsException"/>
        public virtual void TestTwoActiveNNs()
        {
            Configuration    conf    = new HdfsConfiguration();
            MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).Build();

            try
            {
                cluster.GetDfsCluster().WaitActive();
                cluster.GetDfsCluster().TransitionToActive(0);
                DFSClient client0 = new DFSClient(cluster.GetDfsCluster().GetNameNode(0).GetNameNodeAddress
                                                      (), conf);
                DFSClient client1 = new DFSClient(cluster.GetDfsCluster().GetNameNode(1).GetNameNodeAddress
                                                      (), conf);
                DFSInotifyEventInputStream eis = client0.GetInotifyEventStream();
                for (int i = 0; i < 10; i++)
                {
                    client0.Mkdirs("/dir" + i, null, false);
                }
                cluster.GetDfsCluster().TransitionToActive(1);
                for (int i_1 = 10; i_1 < 20; i_1++)
                {
                    client1.Mkdirs("/dir" + i_1, null, false);
                }
                // make sure that the old active can't read any further than the edits
                // it logged itself (it has no idea whether the in-progress edits from
                // the other writer have actually been committed)
                EventBatch batch = null;
                for (int i_2 = 0; i_2 < 10; i_2++)
                {
                    batch = WaitForNextEvents(eis);
                    NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                    NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                                  .Create);
                    NUnit.Framework.Assert.IsTrue(((Event.CreateEvent)batch.GetEvents()[0]).GetPath()
                                                  .Equals("/dir" + i_2));
                }
                NUnit.Framework.Assert.IsTrue(eis.Poll() == null);
            }
            finally
            {
                try
                {
                    cluster.Shutdown();
                }
                catch (ExitUtil.ExitException)
                {
                }
            }
        }
コード例 #3
0
        /// <exception cref="System.IO.IOException"/>
        /// <exception cref="Sharpen.URISyntaxException"/>
        /// <exception cref="Org.Apache.Hadoop.Hdfs.Inotify.MissingEventsException"/>
        public virtual void TestNNFailover()
        {
            Configuration    conf    = new HdfsConfiguration();
            MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).Build();

            try
            {
                cluster.GetDfsCluster().WaitActive();
                cluster.GetDfsCluster().TransitionToActive(0);
                DFSClient client = ((DistributedFileSystem)HATestUtil.ConfigureFailoverFs(cluster
                                                                                          .GetDfsCluster(), conf)).dfs;
                DFSInotifyEventInputStream eis = client.GetInotifyEventStream();
                for (int i = 0; i < 10; i++)
                {
                    client.Mkdirs("/dir" + i, null, false);
                }
                cluster.GetDfsCluster().ShutdownNameNode(0);
                cluster.GetDfsCluster().TransitionToActive(1);
                EventBatch batch = null;
                // we can read all of the edits logged by the old active from the new
                // active
                for (int i_1 = 0; i_1 < 10; i_1++)
                {
                    batch = WaitForNextEvents(eis);
                    NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                    NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                                  .Create);
                    NUnit.Framework.Assert.IsTrue(((Event.CreateEvent)batch.GetEvents()[0]).GetPath()
                                                  .Equals("/dir" + i_1));
                }
                NUnit.Framework.Assert.IsTrue(eis.Poll() == null);
            }
            finally
            {
                cluster.Shutdown();
            }
        }
コード例 #4
0
        /// <summary>Tests all FsEditLogOps that are converted to inotify events.</summary>
        /// <exception cref="System.IO.IOException"/>
        /// <exception cref="Sharpen.URISyntaxException"/>
        /// <exception cref="System.Exception"/>
        /// <exception cref="Org.Apache.Hadoop.Hdfs.Inotify.MissingEventsException"/>
        public virtual void TestBasic()
        {
            Configuration conf = new HdfsConfiguration();

            conf.SetLong(DFSConfigKeys.DfsBlockSizeKey, BlockSize);
            conf.SetBoolean(DFSConfigKeys.DfsNamenodeAclsEnabledKey, true);
            // so that we can get an atime change
            conf.SetLong(DFSConfigKeys.DfsNamenodeAccesstimePrecisionKey, 1);
            MiniQJMHACluster.Builder builder = new MiniQJMHACluster.Builder(conf);
            builder.GetDfsBuilder().NumDataNodes(2);
            MiniQJMHACluster cluster = builder.Build();

            try
            {
                cluster.GetDfsCluster().WaitActive();
                cluster.GetDfsCluster().TransitionToActive(0);
                DFSClient client = new DFSClient(cluster.GetDfsCluster().GetNameNode(0).GetNameNodeAddress
                                                     (), conf);
                FileSystem fs = cluster.GetDfsCluster().GetFileSystem(0);
                DFSTestUtil.CreateFile(fs, new Path("/file"), BlockSize, (short)1, 0L);
                DFSTestUtil.CreateFile(fs, new Path("/file3"), BlockSize, (short)1, 0L);
                DFSTestUtil.CreateFile(fs, new Path("/file5"), BlockSize, (short)1, 0L);
                DFSInotifyEventInputStream eis = client.GetInotifyEventStream();
                client.Rename("/file", "/file4", null);
                // RenameOp -> RenameEvent
                client.Rename("/file4", "/file2");
                // RenameOldOp -> RenameEvent
                // DeleteOp, AddOp -> UnlinkEvent, CreateEvent
                OutputStream os = client.Create("/file2", true, (short)2, BlockSize);
                os.Write(new byte[BlockSize]);
                os.Close();
                // CloseOp -> CloseEvent
                // AddOp -> AppendEvent
                os = client.Append("/file2", BlockSize, EnumSet.Of(CreateFlag.Append), null, null
                                   );
                os.Write(new byte[BlockSize]);
                os.Close();
                // CloseOp -> CloseEvent
                Sharpen.Thread.Sleep(10);
                // so that the atime will get updated on the next line
                client.Open("/file2").Read(new byte[1]);
                // TimesOp -> MetadataUpdateEvent
                // SetReplicationOp -> MetadataUpdateEvent
                client.SetReplication("/file2", (short)1);
                // ConcatDeleteOp -> AppendEvent, UnlinkEvent, CloseEvent
                client.Concat("/file2", new string[] { "/file3" });
                client.Delete("/file2", false);
                // DeleteOp -> UnlinkEvent
                client.Mkdirs("/dir", null, false);
                // MkdirOp -> CreateEvent
                // SetPermissionsOp -> MetadataUpdateEvent
                client.SetPermission("/dir", FsPermission.ValueOf("-rw-rw-rw-"));
                // SetOwnerOp -> MetadataUpdateEvent
                client.SetOwner("/dir", "username", "groupname");
                client.CreateSymlink("/dir", "/dir2", false);
                // SymlinkOp -> CreateEvent
                client.SetXAttr("/file5", "user.field", Sharpen.Runtime.GetBytesForString("value"
                                                                                          ), EnumSet.Of(XAttrSetFlag.Create));
                // SetXAttrOp -> MetadataUpdateEvent
                // RemoveXAttrOp -> MetadataUpdateEvent
                client.RemoveXAttr("/file5", "user.field");
                // SetAclOp -> MetadataUpdateEvent
                client.SetAcl("/file5", AclEntry.ParseAclSpec("user::rwx,user:foo:rw-,group::r--,other::---"
                                                              , true));
                client.RemoveAcl("/file5");
                // SetAclOp -> MetadataUpdateEvent
                client.Rename("/file5", "/dir");
                // RenameOldOp -> RenameEvent
                EventBatch batch = null;
                // RenameOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                long txid = batch.GetTxid();
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Rename);
                Event.RenameEvent re = (Event.RenameEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.AreEqual("/file4", re.GetDstPath());
                NUnit.Framework.Assert.AreEqual("/file", re.GetSrcPath());
                NUnit.Framework.Assert.IsTrue(re.GetTimestamp() > 0);
                long eventsBehind = eis.GetTxidsBehindEstimate();
                // RenameOldOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Rename);
                Event.RenameEvent re2 = (Event.RenameEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(re2.GetDstPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(re2.GetSrcPath().Equals("/file4"));
                NUnit.Framework.Assert.IsTrue(re.GetTimestamp() > 0);
                // AddOp with overwrite
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Create);
                Event.CreateEvent ce = (Event.CreateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(ce.GetiNodeType() == Event.CreateEvent.INodeType.File
                                              );
                NUnit.Framework.Assert.IsTrue(ce.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(ce.GetCtime() > 0);
                NUnit.Framework.Assert.IsTrue(ce.GetReplication() > 0);
                NUnit.Framework.Assert.IsTrue(ce.GetSymlinkTarget() == null);
                NUnit.Framework.Assert.IsTrue(ce.GetOverwrite());
                NUnit.Framework.Assert.AreEqual(BlockSize, ce.GetDefaultBlockSize());
                // CloseOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Close);
                Event.CloseEvent ce2 = (Event.CloseEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(ce2.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(ce2.GetFileSize() > 0);
                NUnit.Framework.Assert.IsTrue(ce2.GetTimestamp() > 0);
                // AppendOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Append);
                Event.AppendEvent append2 = (Event.AppendEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.AreEqual("/file2", append2.GetPath());
                NUnit.Framework.Assert.IsFalse(append2.ToNewBlock());
                // CloseOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Close);
                NUnit.Framework.Assert.IsTrue(((Event.CloseEvent)batch.GetEvents()[0]).GetPath().
                                              Equals("/file2"));
                // TimesOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(mue.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Times);
                // SetReplicationOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue2 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue2.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(mue2.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Replication);
                NUnit.Framework.Assert.IsTrue(mue2.GetReplication() == 1);
                // ConcatDeleteOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(3, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Append);
                NUnit.Framework.Assert.IsTrue(((Event.AppendEvent)batch.GetEvents()[0]).GetPath()
                                              .Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[1].GetEventType() == Event.EventType
                                              .Unlink);
                Event.UnlinkEvent ue2 = (Event.UnlinkEvent)batch.GetEvents()[1];
                NUnit.Framework.Assert.IsTrue(ue2.GetPath().Equals("/file3"));
                NUnit.Framework.Assert.IsTrue(ue2.GetTimestamp() > 0);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[2].GetEventType() == Event.EventType
                                              .Close);
                Event.CloseEvent ce3 = (Event.CloseEvent)batch.GetEvents()[2];
                NUnit.Framework.Assert.IsTrue(ce3.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(ce3.GetTimestamp() > 0);
                // DeleteOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Unlink);
                Event.UnlinkEvent ue = (Event.UnlinkEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(ue.GetPath().Equals("/file2"));
                NUnit.Framework.Assert.IsTrue(ue.GetTimestamp() > 0);
                // MkdirOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Create);
                Event.CreateEvent ce4 = (Event.CreateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(ce4.GetiNodeType() == Event.CreateEvent.INodeType.Directory
                                              );
                NUnit.Framework.Assert.IsTrue(ce4.GetPath().Equals("/dir"));
                NUnit.Framework.Assert.IsTrue(ce4.GetCtime() > 0);
                NUnit.Framework.Assert.IsTrue(ce4.GetReplication() == 0);
                NUnit.Framework.Assert.IsTrue(ce4.GetSymlinkTarget() == null);
                // SetPermissionsOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue3 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue3.GetPath().Equals("/dir"));
                NUnit.Framework.Assert.IsTrue(mue3.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Perms);
                NUnit.Framework.Assert.IsTrue(mue3.GetPerms().ToString().Contains("rw-rw-rw-"));
                // SetOwnerOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue4 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue4.GetPath().Equals("/dir"));
                NUnit.Framework.Assert.IsTrue(mue4.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Owner);
                NUnit.Framework.Assert.IsTrue(mue4.GetOwnerName().Equals("username"));
                NUnit.Framework.Assert.IsTrue(mue4.GetGroupName().Equals("groupname"));
                // SymlinkOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Create);
                Event.CreateEvent ce5 = (Event.CreateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(ce5.GetiNodeType() == Event.CreateEvent.INodeType.Symlink
                                              );
                NUnit.Framework.Assert.IsTrue(ce5.GetPath().Equals("/dir2"));
                NUnit.Framework.Assert.IsTrue(ce5.GetCtime() > 0);
                NUnit.Framework.Assert.IsTrue(ce5.GetReplication() == 0);
                NUnit.Framework.Assert.IsTrue(ce5.GetSymlinkTarget().Equals("/dir"));
                // SetXAttrOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue5 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue5.GetPath().Equals("/file5"));
                NUnit.Framework.Assert.IsTrue(mue5.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Xattrs);
                NUnit.Framework.Assert.IsTrue(mue5.GetxAttrs().Count == 1);
                NUnit.Framework.Assert.IsTrue(mue5.GetxAttrs()[0].GetName().Contains("field"));
                NUnit.Framework.Assert.IsTrue(!mue5.IsxAttrsRemoved());
                // RemoveXAttrOp
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue6 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue6.GetPath().Equals("/file5"));
                NUnit.Framework.Assert.IsTrue(mue6.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Xattrs);
                NUnit.Framework.Assert.IsTrue(mue6.GetxAttrs().Count == 1);
                NUnit.Framework.Assert.IsTrue(mue6.GetxAttrs()[0].GetName().Contains("field"));
                NUnit.Framework.Assert.IsTrue(mue6.IsxAttrsRemoved());
                // SetAclOp (1)
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue7 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue7.GetPath().Equals("/file5"));
                NUnit.Framework.Assert.IsTrue(mue7.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Acls);
                NUnit.Framework.Assert.IsTrue(mue7.GetAcls().Contains(AclEntry.ParseAclEntry("user::rwx"
                                                                                             , true)));
                // SetAclOp (2)
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Metadata);
                Event.MetadataUpdateEvent mue8 = (Event.MetadataUpdateEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(mue8.GetPath().Equals("/file5"));
                NUnit.Framework.Assert.IsTrue(mue8.GetMetadataType() == Event.MetadataUpdateEvent.MetadataType
                                              .Acls);
                NUnit.Framework.Assert.IsTrue(mue8.GetAcls() == null);
                // RenameOp (2)
                batch = WaitForNextEvents(eis);
                NUnit.Framework.Assert.AreEqual(1, batch.GetEvents().Length);
                txid = CheckTxid(batch, txid);
                NUnit.Framework.Assert.IsTrue(batch.GetEvents()[0].GetEventType() == Event.EventType
                                              .Rename);
                Event.RenameEvent re3 = (Event.RenameEvent)batch.GetEvents()[0];
                NUnit.Framework.Assert.IsTrue(re3.GetDstPath().Equals("/dir/file5"));
                NUnit.Framework.Assert.IsTrue(re3.GetSrcPath().Equals("/file5"));
                NUnit.Framework.Assert.IsTrue(re.GetTimestamp() > 0);
                // Returns null when there are no further events
                NUnit.Framework.Assert.IsTrue(eis.Poll() == null);
                // make sure the estimate hasn't changed since the above assertion
                // tells us that we are fully caught up to the current namesystem state
                // and we should not have been behind at all when eventsBehind was set
                // either, since there were few enough events that they should have all
                // been read to the client during the first poll() call
                NUnit.Framework.Assert.IsTrue(eis.GetTxidsBehindEstimate() == eventsBehind);
            }
            finally
            {
                cluster.Shutdown();
            }
        }