/**
 * Waits until there is only one log(the current writing one) in the replication queue
 * @param numRs number of regionservers
 */
private void waitForLogAdvance(int numRs) throws Exception {
  Waiter.waitFor(CONF1, 10000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      for (int i = 0; i < numRs; i++) {
        HRegionServer hrs = UTIL1.getHBaseCluster().getRegionServer(i);
        RegionInfo regionInfo =
            UTIL1.getHBaseCluster().getRegions(htable1.getName()).get(0).getRegionInfo();
        WAL wal = hrs.getWAL(regionInfo);
        Path currentFile = ((AbstractFSWAL<?>) wal).getCurrentFileName();
        Replication replicationService = (Replication) UTIL1.getHBaseCluster()
            .getRegionServer(i).getReplicationSourceService();
        for (ReplicationSourceInterface rsi : replicationService.getReplicationManager()
            .getSources()) {
          ReplicationSource source = (ReplicationSource) rsi;
          if (!currentFile.equals(source.getCurrentPath())) {
            return false;
          }
        }
      }
      return true;
    }
  });
}
 

@Test
public void testReplicationStatusSink() throws Exception {
  try (Admin admin = UTIL2.getConnection().getAdmin()) {
    ServerName server = UTIL2.getHBaseCluster().getRegionServer(0).getServerName();
    ReplicationLoadSink loadSink = getLatestSinkMetric(admin, server);
    //First checks if status of timestamp of last applied op is same as RS start, since no edits
    //were replicated yet
    Assert.assertEquals(loadSink.getTimestampStarted(), loadSink.getTimestampsOfLastAppliedOp());
    //now insert some rows on source, so that it gets delivered to target
    TestReplicationStatus.insertRowsOnSource();
    long wait =
      Waiter.waitFor(UTIL2.getConfiguration(), 10000, (Waiter.Predicate<Exception>) () -> {
        ReplicationLoadSink loadSink1 = getLatestSinkMetric(admin, server);
        return loadSink1.getTimestampsOfLastAppliedOp() > loadSink1.getTimestampStarted();
      });
    Assert.assertNotEquals(-1, wait);
  }
}
 

private static void waitPeer(final String peerId,
    ReplicationSourceManager manager, final boolean waitForSource) {
  ReplicationPeers rp = manager.getReplicationPeers();
  Waiter.waitFor(conf, 20000, () -> {
    if (waitForSource) {
      ReplicationSourceInterface rs = manager.getSource(peerId);
      if (rs == null) {
        return false;
      }
      if (rs instanceof ReplicationSourceDummy) {
        return ((ReplicationSourceDummy)rs).isStartup();
      }
      return true;
    } else {
      return (rp.getPeer(peerId) != null);
    }
  });
}
 

/**
 * Remove a peer and wait for it to get cleaned up
 */
private void removePeerAndWait(final String peerId) throws Exception {
  final ReplicationPeers rp = manager.getReplicationPeers();
  if (rp.getPeerStorage().listPeerIds().contains(peerId)) {
    rp.getPeerStorage().removePeer(peerId);
    try {
      manager.removePeer(peerId);
    } catch (Exception e) {
      // ignore the failed exception and continue.
    }
  }
  Waiter.waitFor(conf, 20000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      Collection<String> peers = rp.getPeerStorage().listPeerIds();
      return (!manager.getAllQueues().contains(peerId)) && (rp.getPeer(peerId) == null)
          && (!peers.contains(peerId)) && manager.getSource(peerId) == null;
    }
  });
}
 

@Test
public void testRace() throws Exception {
  ProcedureExecutor<MasterProcedureEnv> executor =
    UTIL.getMiniHBaseCluster().getMaster().getMasterProcedureExecutor();
  DummyProcedure p = new DummyProcedure();
  long procId = executor.submitProcedure(p);
  p.failureSet.await();
  assertEquals(GetProcedureResultResponse.State.RUNNING, getState(procId));
  p.canRollback.countDown();
  UTIL.waitFor(30000, new Waiter.ExplainingPredicate<Exception>() {

    @Override
    public boolean evaluate() throws Exception {
      return getState(procId) == GetProcedureResultResponse.State.FINISHED;
    }

    @Override
    public String explainFailure() throws Exception {
      return "Procedure pid=" + procId + " is still in " + getState(procId) +
        " state, expected " + GetProcedureResultResponse.State.FINISHED;
    }
  });
}
 

private void waitForTableToEnterQuotaViolation(TableName tn) throws Exception {
  // Verify that the RegionServer has the quota in violation
  final HRegionServer rs = TEST_UTIL.getHBaseCluster().getRegionServer(0);
  Waiter.waitFor(TEST_UTIL.getConfiguration(), 30 * 1000, 1000, new Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      Map<TableName,SpaceQuotaSnapshot> snapshots =
          rs.getRegionServerSpaceQuotaManager().copyQuotaSnapshots();
      SpaceQuotaSnapshot snapshot = snapshots.get(tn);
      if (snapshot == null) {
        LOG.info("Found no snapshot for " + tn);
        return false;
      }
      LOG.info("Found snapshot " + snapshot);
      return snapshot.getQuotaStatus().isInViolation();
    }
  });
}
 

@Test
public void testRegionSizesFromMaster() throws Exception {
  final long tableSize = 1024L * 10L; // 10KB
  final int numRegions = 10;
  final TableName tn = helper.createTableWithRegions(numRegions);
  // Will write at least `tableSize` data
  helper.writeData(tn, tableSize);

  final HMaster master = TEST_UTIL.getMiniHBaseCluster().getMaster();
  final MasterQuotaManager quotaManager = master.getMasterQuotaManager();
  // Make sure the master has all of the reports
  Waiter.waitFor(TEST_UTIL.getConfiguration(), 30 * 1000, new Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      Map<RegionInfo,Long> regionSizes = quotaManager.snapshotRegionSizes();
      LOG.trace("Region sizes=" + regionSizes);
      return numRegions == countRegionsForTable(tn, regionSizes) &&
          tableSize <= getTableSize(tn, regionSizes);
    }
  });

  Map<TableName, Long> sizes = TEST_UTIL.getAdmin().getSpaceQuotaTableSizes();
  Long size = sizes.get(tn);
  assertNotNull("No reported size for " + tn, size);
  assertTrue("Reported table size was " + size, size.longValue() >= tableSize);
}
 

@Test
public void testAsyncSnapshotWillNotBlockSnapshotHFileCleaner() throws Exception {
  // Write some data
  Table table = UTIL.getConnection().getTable(TABLE_NAME);
  for (int i = 0; i < 10; i++) {
    Put put = new Put(Bytes.toBytes(i)).addColumn(TEST_FAM, Bytes.toBytes("q"), Bytes.toBytes(i));
    table.put(put);
  }
  String snapshotName = "testAsyncSnapshotWillNotBlockSnapshotHFileCleaner01";
  Future<Void> future =
    UTIL.getAdmin().snapshotAsync(new org.apache.hadoop.hbase.client.SnapshotDescription(
      snapshotName, TABLE_NAME, SnapshotType.FLUSH));
  Waiter.waitFor(UTIL.getConfiguration(), 10 * 1000L, 200L,
    () -> UTIL.getAdmin().listSnapshots(Pattern.compile(snapshotName)).size() == 1);
  UTIL.waitFor(30000, () -> !master.getSnapshotManager().isTakingAnySnapshot());
}
 

private void stopServersAndWaitUntilProcessed(List<ServerName> currentFN) throws Exception {
  for (ServerName sn : currentFN) {
    for (JVMClusterUtil.RegionServerThread rst : cluster.getLiveRegionServerThreads()) {
      if (ServerName.isSameAddress(sn, rst.getRegionServer().getServerName())) {
        LOG.info("Shutting down server: " + sn);
        cluster.stopRegionServer(rst.getRegionServer().getServerName());
        cluster.waitForRegionServerToStop(rst.getRegionServer().getServerName(), 60000);
      }
    }
  }

  // Wait until dead servers are processed.
  TEST_UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return !master.getServerManager().areDeadServersInProgress();
    }
  });

  assertEquals("Not all servers killed",
      SLAVES - currentFN.size(), cluster.getLiveRegionServerThreads().size());
}
 

public static boolean waitForAssignment(AssignmentManager am, RegionInfo regionInfo)
    throws IOException {
  // This method can be called before the regionInfo has made it into the regionStateMap
  // so wait around here a while.
  Waiter.waitFor(am.getConfiguration(), 10000,
    () -> am.getRegionStates().getRegionStateNode(regionInfo) != null);
  RegionStateNode regionNode = am.getRegionStates().getRegionStateNode(regionInfo);
  // Wait until the region has already been open, or we have a TRSP along with it.
  Waiter.waitFor(am.getConfiguration(), 30000,
    () -> regionNode.isInState(State.OPEN) || regionNode.isInTransition());
  TransitRegionStateProcedure proc = regionNode.getProcedure();
  regionNode.lock();
  try {
    if (regionNode.isInState(State.OPEN)) {
      return true;
    }
    proc = regionNode.getProcedure();
  } finally {
    regionNode.unlock();
  }
  assertNotNull(proc);
  ProcedureSyncWait.waitForProcedureToCompleteIOE(am.getMaster().getMasterProcedureExecutor(),
    proc, 5L * 60 * 1000);
  return true;
}
 

private void startCluster(int numRS) throws Exception {
  SplitLogCounters.resetCounters();
  LOG.info("Starting cluster");
  conf.setLong("hbase.splitlog.max.resubmit", 0);
  // Make the failure test faster
  conf.setInt("zookeeper.recovery.retry", 0);
  conf.setInt(HConstants.REGIONSERVER_INFO_PORT, -1);
  conf.setFloat(HConstants.LOAD_BALANCER_SLOP_KEY, (float) 100.0); // no load balancing
  conf.setInt(HBASE_SPLIT_WAL_MAX_SPLITTER, 3);
  conf.setInt(HConstants.REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT, 10);
  conf.set("hbase.wal.provider", getWalProvider());
  StartMiniClusterOption option = StartMiniClusterOption.builder()
      .numMasters(NUM_MASTERS).numRegionServers(numRS).build();
  TEST_UTIL.startMiniHBaseCluster(option);
  cluster = TEST_UTIL.getHBaseCluster();
  LOG.info("Waiting for active/ready master");
  cluster.waitForActiveAndReadyMaster();
  master = cluster.getMaster();
  TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return cluster.getLiveRegionServerThreads().size() >= numRS;
    }
  });
}
 

@BeforeClass
public static void setUp() throws Exception {
  TEST_UTIL = new HBaseTestingUtility();
  RSGroupUtil.enableRSGroup(TEST_UTIL.getConfiguration());
  TEST_UTIL.getConfiguration().set(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, "1");
  StartMiniClusterOption option =
    StartMiniClusterOption.builder().numMasters(2).numRegionServers(3).numDataNodes(3).build();
  TEST_UTIL.startMiniCluster(option);
  cluster = TEST_UTIL.getHBaseCluster();
  master = ((MiniHBaseCluster) cluster).getMaster();
  master.balanceSwitch(false);
  hbaseAdmin = TEST_UTIL.getAdmin();
  // wait till the balancer is in online mode
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return master.isInitialized() &&
        ((RSGroupBasedLoadBalancer) master.getLoadBalancer()).isOnline() &&
        master.getServerManager().getOnlineServersList().size() >= 3;
    }
  });
}
 

@Test
public void testNamespaceCreateAndAssign() throws Exception {
  LOG.info("testNamespaceCreateAndAssign");
  String nsName = TABLE_PREFIX + "_foo";
  final TableName tableName = TableName.valueOf(nsName, TABLE_PREFIX + "_testCreateAndAssign");
  RSGroupInfo appInfo = addGroup("appInfo", 1);
  ADMIN.createNamespace(NamespaceDescriptor.create(nsName)
    .addConfiguration(RSGroupInfo.NAMESPACE_DESC_PROP_GROUP, "appInfo").build());
  final TableDescriptor desc = TableDescriptorBuilder.newBuilder(tableName)
    .setColumnFamily(ColumnFamilyDescriptorBuilder.of("f")).build();
  ADMIN.createTable(desc);
  // wait for created table to be assigned
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return getTableRegionMap().get(desc.getTableName()) != null;
    }
  });
  ServerName targetServer = getServerName(appInfo.getServers().iterator().next());
  // verify it was assigned to the right group
  Assert.assertEquals(1, ADMIN.getRegions(targetServer).size());
}
 

@Test
public void testDefaultNamespaceCreateAndAssign() throws Exception {
  LOG.info("testDefaultNamespaceCreateAndAssign");
  String tableName = TABLE_PREFIX + "_testCreateAndAssign";
  ADMIN.modifyNamespace(NamespaceDescriptor.create("default")
    .addConfiguration(RSGroupInfo.NAMESPACE_DESC_PROP_GROUP, "default").build());
  final TableDescriptor desc = TableDescriptorBuilder.newBuilder(TableName.valueOf(tableName))
    .setColumnFamily(ColumnFamilyDescriptorBuilder.of("f")).build();
  ADMIN.createTable(desc);
  // wait for created table to be assigned
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return getTableRegionMap().get(desc.getTableName()) != null;
    }
  });
}
 

@Before
@Override
public void setUp() throws Exception {
  utility = new HBaseTestingUtility();
  Configuration conf = utility.getConfiguration();
  RSGroupUtil.enableRSGroup(conf);
  conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, NUM_SLAVES_BASE);
  conf.setInt("hbase.hfile.compaction.discharger.interval", 10);
  utility.startMiniCluster(NUM_SLAVES_BASE);
  MiniHBaseCluster cluster = utility.getHBaseCluster();
  final HMaster master = cluster.getMaster();

  //wait for balancer to come online
  utility.waitFor(60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() {
      return master.isInitialized() &&
          ((RSGroupBasedLoadBalancer) master.getLoadBalancer()).isOnline();
    }
  });
  admin = utility.getAdmin();
}
 

private Pair<ServerName, RegionStateNode> createTableWithRegionSplitting(RSGroupInfo rsGroupInfo,
  int tableRegionCount) throws Exception {
  final byte[] familyNameBytes = Bytes.toBytes("f");
  // All the regions created below will be assigned to the default group.
  TEST_UTIL.createMultiRegionTable(tableName, familyNameBytes, tableRegionCount);
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      List<String> regions = getTableRegionMap().get(tableName);
      if (regions == null) {
        return false;
      }
      return getTableRegionMap().get(tableName).size() >= tableRegionCount;
    }
  });

  return randomlySetOneRegionStateToSplitting(rsGroupInfo);
}
 

protected static void initialize() throws Exception {
  ADMIN = new VerifyingRSGroupAdmin(TEST_UTIL.getConfiguration());
  CLUSTER = TEST_UTIL.getHBaseCluster();
  MASTER = TEST_UTIL.getMiniHBaseCluster().getMaster();

  // wait for balancer to come online
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return MASTER.isInitialized() &&
        ((RSGroupBasedLoadBalancer) MASTER.getLoadBalancer()).isOnline();
    }
  });
  ADMIN.balancerSwitch(false, true);
  MasterCoprocessorHost host = MASTER.getMasterCoprocessorHost();
  OBSERVER = (CPMasterObserver) host.findCoprocessor(CPMasterObserver.class.getName());
}
 

private boolean waitForCounterBoolean(final LongAdder ctr, final long oldval, final long newval,
    long timems, boolean failIfTimeout) throws Exception {

  long timeWaited = TEST_UTIL.waitFor(timems, 10, failIfTimeout,
    new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
          return (ctr.sum() >= newval);
    }
  });

  if( timeWaited > 0) {
    // when not timed out
    assertEquals(newval, ctr.sum());
  }
  return true;
}
 

@Test
public void removeClosedRegionFromConfigurationManager() throws Exception {
  try (Connection connection = ConnectionFactory.createConnection(conf)) {
    Admin admin = connection.getAdmin();
    assertTrue("The open region doesn't register as a ConfigurationObserver",
      rs1.getConfigurationManager().containsObserver(r1));
    admin.move(r1name);
    hbaseTestingUtility.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
      @Override public boolean evaluate() throws Exception {
        return rs1.getOnlineRegion(r1name) == null;
      }
    });
    assertFalse("The closed region is not removed from ConfigurationManager",
      rs1.getConfigurationManager().containsObserver(r1));
    admin.move(r1name, rs1.getServerName());
    hbaseTestingUtility.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
      @Override public boolean evaluate() throws Exception {
        return rs1.getOnlineRegion(r1name) != null;
      }
    });
  }
}
 

@BeforeClass
public static void setUpBeforeClass() throws Exception {
  conf = TEST_UTIL.getConfiguration();
  TEST_UTIL.startMiniCluster();
  TEST_UTIL.createTable(TableName.valueOf("TestStatusResource"), Bytes.toBytes("D"));
  TEST_UTIL.createTable(TableName.valueOf("TestStatusResource2"), Bytes.toBytes("D"));
  REST_TEST_UTIL.startServletContainer(conf);
  Cluster cluster = new Cluster();
  cluster.add("localhost", REST_TEST_UTIL.getServletPort());
  client = new Client(cluster);
  context = JAXBContext.newInstance(StorageClusterStatusModel.class);
  TEST_UTIL.waitFor(6000, new Waiter.Predicate<IOException>() {
    @Override
    public boolean evaluate() throws IOException {
      return TEST_UTIL.getMiniHBaseCluster().getClusterMetrics().getAverageLoad() > 0;
    }
  });
}
 

/**
 * Tests the replication scenario 0 -> 0. By default
 * {@link BaseReplicationEndpoint#canReplicateToSameCluster()} returns false, so the
 * ReplicationSource should terminate, and no further logs should get enqueued
 */
@Test
public void testLoopedReplication() throws Exception {
  LOG.info("testLoopedReplication");
  startMiniClusters(1);
  createTableOnClusters(table);
  addPeer("1", 0, 0);
  Thread.sleep(SLEEP_TIME);

  // wait for source to terminate
  final ServerName rsName = utilities[0].getHBaseCluster().getRegionServer(0).getServerName();
  Waiter.waitFor(baseConfiguration, 10000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      ClusterMetrics clusterStatus = utilities[0].getAdmin()
          .getClusterMetrics(EnumSet.of(ClusterMetrics.Option.LIVE_SERVERS));
      ServerMetrics serverLoad = clusterStatus.getLiveServerMetrics().get(rsName);
      List<ReplicationLoadSource> replicationLoadSourceList =
          serverLoad.getReplicationLoadSourceList();
      return replicationLoadSourceList.isEmpty();
    }
  });

  Table[] htables = getHTablesOnClusters(tableName);
  putAndWait(row, famName, htables[0], htables[0]);
  rollWALAndWait(utilities[0], table.getTableName(), row);
  ZKWatcher zkw = utilities[0].getZooKeeperWatcher();
  String queuesZnode = ZNodePaths.joinZNode(zkw.getZNodePaths().baseZNode,
    ZNodePaths.joinZNode("replication", "rs"));
  List<String> listChildrenNoWatch =
      ZKUtil.listChildrenNoWatch(zkw, ZNodePaths.joinZNode(queuesZnode, rsName.toString()));
  assertEquals(0, listChildrenNoWatch.size());
}
 

@Test
public void testCustomReplicationEndpoint() throws Exception {
  // test installing a custom replication endpoint other than the default one.
  hbaseAdmin.addReplicationPeer("testCustomReplicationEndpoint",
      new ReplicationPeerConfig().setClusterKey(ZKConfig.getZooKeeperClusterKey(CONF1))
          .setReplicationEndpointImpl(ReplicationEndpointForTest.class.getName()));

  // check whether the class has been constructed and started
  Waiter.waitFor(CONF1, 60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return ReplicationEndpointForTest.contructedCount.get() >= numRegionServers;
    }
  });

  Waiter.waitFor(CONF1, 60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return ReplicationEndpointForTest.startedCount.get() >= numRegionServers;
    }
  });

  Assert.assertEquals(0, ReplicationEndpointForTest.replicateCount.get());

  // now replicate some data.
  doPut(Bytes.toBytes("row42"));

  Waiter.waitFor(CONF1, 60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return ReplicationEndpointForTest.replicateCount.get() >= 1;
    }
  });

  doAssert(Bytes.toBytes("row42"));

  hbaseAdmin.removeReplicationPeer("testCustomReplicationEndpoint");
}
 

@Test
public void testReplicationEndpointReturnsFalseOnReplicate() throws Exception {
  Assert.assertEquals(0, ReplicationEndpointForTest.replicateCount.get());
  Assert.assertTrue(!ReplicationEndpointReturningFalse.replicated.get());
  int peerCount = hbaseAdmin.listReplicationPeers().size();
  final String id = "testReplicationEndpointReturnsFalseOnReplicate";
  hbaseAdmin.addReplicationPeer(id,
    new ReplicationPeerConfig().setClusterKey(ZKConfig.getZooKeeperClusterKey(CONF1))
      .setReplicationEndpointImpl(ReplicationEndpointReturningFalse.class.getName()));
  // This test is flakey and then there is so much stuff flying around in here its, hard to
  // debug.  Peer needs to be up for the edit to make it across. This wait on
  // peer count seems to be a hack that has us not progress till peer is up.
  if (hbaseAdmin.listReplicationPeers().size() <= peerCount) {
    LOG.info("Waiting on peercount to go up from " + peerCount);
    Threads.sleep(100);
  }
  // now replicate some data
  doPut(row);

  Waiter.waitFor(CONF1, 60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      // Looks like replication endpoint returns false unless we put more than 10 edits. We
      // only send over one edit.
      int count = ReplicationEndpointForTest.replicateCount.get();
      LOG.info("count=" + count);
      return ReplicationEndpointReturningFalse.replicated.get();
    }
  });
  if (ReplicationEndpointReturningFalse.ex.get() != null) {
    throw ReplicationEndpointReturningFalse.ex.get();
  }

  hbaseAdmin.removeReplicationPeer("testReplicationEndpointReturnsFalseOnReplicate");
}
 

@Test
public void testWALEntryFilterFromReplicationEndpoint() throws Exception {
  ReplicationPeerConfig rpc =
    new ReplicationPeerConfig().setClusterKey(ZKConfig.getZooKeeperClusterKey(CONF1))
      .setReplicationEndpointImpl(ReplicationEndpointWithWALEntryFilter.class.getName());
  // test that we can create mutliple WALFilters reflectively
  rpc.getConfiguration().put(BaseReplicationEndpoint.REPLICATION_WALENTRYFILTER_CONFIG_KEY,
    EverythingPassesWALEntryFilter.class.getName() + "," +
      EverythingPassesWALEntryFilterSubclass.class.getName());
  hbaseAdmin.addReplicationPeer("testWALEntryFilterFromReplicationEndpoint", rpc);
  // now replicate some data.
  try (Connection connection = ConnectionFactory.createConnection(CONF1)) {
    doPut(connection, Bytes.toBytes("row1"));
    doPut(connection, row);
    doPut(connection, Bytes.toBytes("row2"));
  }

  Waiter.waitFor(CONF1, 60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return ReplicationEndpointForTest.replicateCount.get() >= 1;
    }
  });

  Assert.assertNull(ReplicationEndpointWithWALEntryFilter.ex.get());
  //make sure our reflectively created filter is in the filter chain
  Assert.assertTrue(EverythingPassesWALEntryFilter.hasPassedAnEntry());
  hbaseAdmin.removeReplicationPeer("testWALEntryFilterFromReplicationEndpoint");
}
 

@Test
public void testChangingNumberOfPeerRegionServers() throws IOException, InterruptedException {
  LOG.info("testSimplePutDelete");
  MiniHBaseCluster peerCluster = UTIL2.getMiniHBaseCluster();
  // This test wants two RS's up. We only run one generally so add one.
  peerCluster.startRegionServer();
  Waiter.waitFor(peerCluster.getConfiguration(), 30000, new Waiter.Predicate<Exception>() {
    @Override public boolean evaluate() throws Exception {
      return peerCluster.getLiveRegionServerThreads().size() > 1;
    }
  });
  int numRS = peerCluster.getRegionServerThreads().size();

  doPutTest(Bytes.toBytes(1));

  int rsToStop = peerCluster.getServerWithMeta() == 0 ? 1 : 0;
  peerCluster.stopRegionServer(rsToStop);
  peerCluster.waitOnRegionServer(rsToStop);

  // Sanity check
  assertEquals(numRS - 1, peerCluster.getRegionServerThreads().size());

  doPutTest(Bytes.toBytes(2));

  peerCluster.startRegionServer();

  // Sanity check
  assertEquals(numRS, peerCluster.getRegionServerThreads().size());

  doPutTest(Bytes.toBytes(3));
}
 

@Test
public void testMultiLimits() throws Exception {
  final TableName tableName = TableName.valueOf(name.getMethodName());
  Table t = TEST_UTIL.createTable(tableName, FAMILY);
  TEST_UTIL.loadTable(t, FAMILY, false);

  // Split the table to make sure that the chunking happens accross regions.
  try (final Admin admin = TEST_UTIL.getAdmin()) {
    admin.split(tableName);
    TEST_UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {
        return admin.getRegions(tableName).size() > 1;
      }
    });
  }
  List<Get> gets = new ArrayList<>(MAX_SIZE);

  for (int i = 0; i < MAX_SIZE; i++) {
    gets.add(new Get(HBaseTestingUtility.ROWS[i]));
  }

  RpcServerInterface rpcServer = TEST_UTIL.getHBaseCluster().getRegionServer(0).getRpcServer();
  BaseSource s = rpcServer.getMetrics().getMetricsSource();
  long startingExceptions = METRICS_ASSERT.getCounter("exceptions", s);
  long startingMultiExceptions = METRICS_ASSERT.getCounter("exceptions.multiResponseTooLarge", s);

  Result[] results = t.get(gets);
  assertEquals(MAX_SIZE, results.length);

  // Cells from TEST_UTIL.loadTable have a length of 27.
  // Multiplying by less than that gives an easy lower bound on size.
  // However in reality each kv is being reported as much higher than that.
  METRICS_ASSERT.assertCounterGt("exceptions",
      startingExceptions + ((MAX_SIZE * 25) / MAX_SIZE), s);
  METRICS_ASSERT.assertCounterGt("exceptions.multiResponseTooLarge",
      startingMultiExceptions + ((MAX_SIZE * 25) / MAX_SIZE), s);
}
 

static void waitUntilAllMetaReplicasAreReady(HBaseTestingUtility util,
    ConnectionRegistry registry) {
  Configuration conf = util.getConfiguration();
  int regionReplicaCount = util.getConfiguration().getInt(HConstants.META_REPLICAS_NUM,
      HConstants.DEFAULT_META_REPLICA_NUM);
  Waiter.waitFor(conf, conf.getLong("hbase.client.sync.wait.timeout.msec", 60000), 200, true,
    new ExplainingPredicate<IOException>() {
      @Override
      public String explainFailure() {
        return "Not all meta replicas get assigned";
      }

      @Override
      public boolean evaluate() {
        try {
          RegionLocations locs = registry.getMetaRegionLocations().get();
          if (locs.size() < regionReplicaCount) {
            return false;
          }
          for (int i = 0; i < regionReplicaCount; i++) {
            HRegionLocation loc = locs.getRegionLocation(i);
            // Wait until the replica is served by a region server. There could be delay between
            // the replica being available to the connection and region server opening it.
            Optional<ServerName> rsCarryingReplica =
                getRSCarryingReplica(util, loc.getRegion().getTable(), i);
            if (!rsCarryingReplica.isPresent()) {
              return false;
            }
          }
          return true;
        } catch (Exception e) {
          TestZKConnectionRegistry.LOG.warn("Failed to get meta region locations", e);
          return false;
        }
      }
    });
}
 

private void waitUntilTableRegionCountReached(final TableName tableName, final int numRegions)
    throws Exception {
  TEST_UTIL.waitFor(WAIT_TIMEOUT, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return MetaTableAccessor.getRegionCount(TEST_UTIL.getConfiguration(), tableName) == numRegions;
    }
  });
}
 

@BeforeClass
public static void setUp() throws Exception {
  Configuration conf = TEST_UTIL.getConfiguration();
  SpaceQuotaHelperForTests.updateConfigForQuotas(conf);
  TEST_UTIL.startMiniCluster(1);
  // Wait till quota table onlined.
  TEST_UTIL.waitFor(10000, new Waiter.Predicate<Exception>() {
    @Override public boolean evaluate() throws Exception {
      return MetaTableAccessor.tableExists(TEST_UTIL.getConnection(),
        QuotaTableUtil.QUOTA_TABLE_NAME);
    }
  });
}
 

private void waitForHFilesCountLessorEqual(TableName tn, byte[] cf, int count) throws Exception {
  Waiter.waitFor(TEST_UTIL.getConfiguration(), 30 * 1000, 1000, new Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return TEST_UTIL.getNumHFiles(tn, cf) <= count;
    }
  });
}