Java Waiter类代码示例

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
@Test (timeout=120000)
public void testWALEntryFilterFromReplicationEndpoint() throws Exception {
  admin.addPeer("testWALEntryFilterFromReplicationEndpoint",
    new ReplicationPeerConfig().setClusterKey(ZKConfig.getZooKeeperClusterKey(conf1))
      .setReplicationEndpointImpl(ReplicationEndpointWithWALEntryFilter.class.getName()), null);
  // 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());
  admin.removePeer("testWALEntryFilterFromReplicationEndpoint");
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
private boolean waitForCounterBoolean(final AtomicLong 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.get() >= newval);
    }
  });

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

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
@Test (timeout=120000)
public void testWALEntryFilterFromReplicationEndpoint() throws Exception {
  admin.addPeer("testWALEntryFilterFromReplicationEndpoint",
    new ReplicationPeerConfig().setClusterKey(ZKUtil.getZooKeeperClusterKey(conf1))
      .setReplicationEndpointImpl(ReplicationEndpointWithWALEntryFilter.class.getName()), null);
  // 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());
  admin.removePeer("testWALEntryFilterFromReplicationEndpoint");
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
public static void waitForTableToBeOnline(final HBaseTestingUtility util,
                                          final TableName tableName)
    throws IOException, InterruptedException {
  HRegionServer rs = util.getRSForFirstRegionInTable(tableName);
  List<HRegion> onlineRegions = rs.getOnlineRegions(tableName);
  for (HRegion region : onlineRegions) {
    region.waitForFlushesAndCompactions();
  }
  // Wait up to 60 seconds for a table to be available.
  final HBaseAdmin hBaseAdmin = util.getHBaseAdmin();
  util.waitFor(60000, new Waiter.Predicate<IOException>() {
    @Override
    public boolean evaluate() throws IOException {
      return hBaseAdmin.isTableAvailable(tableName);
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
/**
 * 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 = utility1.getHBaseCluster().getRegionServer(i);
        RegionInfo regionInfo =
            utility1.getHBaseCluster().getRegions(htable1.getName()).get(0).getRegionInfo();
        WAL wal = hrs.getWAL(regionInfo);
        Path currentFile = ((AbstractFSWAL<?>) wal).getCurrentFileName();
        Replication replicationService = (Replication) utility1.getHBaseCluster()
            .getRegionServer(i).getReplicationSourceService();
        for (ReplicationSourceInterface rsi : replicationService.getReplicationManager()
            .getSources()) {
          ReplicationSource source = (ReplicationSource) rsi;
          if (!currentFile.equals(source.getCurrentPath())) {
            return false;
          }
        }
      }
      return true;
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
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);
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
/**
 * Remove a peer and wait for it to get cleaned up
 * @param peerId
 * @throws Exception
 */
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;
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
@Test
public void testRace() throws Exception {
  ProcedureExecutor<?> 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;
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
private static void checkExistence(final Table htable, final byte[] row, final byte[] family,
    final byte[] quality,
    final byte[] value) throws Exception {
  // verify that the Get returns the correct result
  TEST_UTIL.waitFor(30000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      Result r;
      Get get = new Get(row);
      get.addColumn(family, quality);
      r = htable.get(get);
      return r != null && r.getValue(family, quality) != null
          && Bytes.toStringBinary(value).equals(
          Bytes.toStringBinary(r.getValue(family, quality)));
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
@Test(timeout = 60000)
public void testCreateAndDelete() throws Exception {
  String testName = "testCreateAndDelete";
  String nsName = prefix + "_" + testName;

  // create namespace and verify
  admin.createNamespace(NamespaceDescriptor.create(nsName).build()).join();
  assertEquals(3, admin.listNamespaceDescriptors().get().size());
  TEST_UTIL.waitFor(60000, new Waiter.Predicate<Exception>() {
    @Override
    public boolean evaluate() throws Exception {
      return zkNamespaceManager.list().size() == 3;
    }
  });
  assertNotNull(zkNamespaceManager.get(nsName));
  // delete namespace and verify
  admin.deleteNamespace(nsName).join();
  assertEquals(2, admin.listNamespaceDescriptors().get().size());
  assertEquals(2, zkNamespaceManager.list().size());
  assertNull(zkNamespaceManager.get(nsName));
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
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();
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
@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 = QuotaTableUtil.getMasterReportedTableSizes(TEST_UTIL.getConnection());
  Long size = sizes.get(tn);
  assertNotNull("No reported size for " + tn, size);
  assertTrue("Reported table size was " + size, size.longValue() >= tableSize);
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
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());
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
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.regionserver.wal.max.splitters", 3);
  conf.setInt(HConstants.REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT, 10);
  conf.set("hbase.wal.provider", getWalProvider());
  TEST_UTIL.startMiniHBaseCluster(NUM_MASTERS, numRS);
  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;
    }
  });
}
 

import org.apache.hadoop.hbase.Waiter; //导入依赖的package包/类
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;
}