Examples of ZooKeeperWrapper

org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper
Wraps a ZooKeeper instance and adds HBase specific functionality. This class provides methods to: - read/write/delete the root region location in ZooKeeper. - set/check out of safe mode flag.

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

      }
      this.rootRegionLocation = rootRegion;
    }


    public HMasterInterface getMaster() throws MasterNotRunningException {
      ZooKeeperWrapper zk;
      try {
        zk = getZooKeeperWrapper();
      } catch (IOException e) {
        throw new MasterNotRunningException(e);
      }


      HServerAddress masterLocation = null;
      synchronized (this.masterLock) {
        for (int tries = 0;
          !this.closed &&
          !this.masterChecked && this.master == null &&
          tries < numRetries;
        tries++) {


          try {
            masterLocation = zk.readMasterAddressOrThrow();


            HMasterInterface tryMaster = (HMasterInterface)HBaseRPC.getProxy(
                HMasterInterface.class, HBaseRPCProtocolVersion.versionID,
                masterLocation.getInetSocketAddress(), this.conf);

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

    private HRegionLocation locateRootRegion()
    throws IOException {


      // We lazily instantiate the ZooKeeper object because we don't want to
      // make the constructor have to throw IOException or handle it itself.
      ZooKeeperWrapper zk = getZooKeeperWrapper();


      HServerAddress rootRegionAddress = null;
      for (int tries = 0; tries < numRetries; tries++) {
        int localTimeouts = 0;
        // ask the master which server has the root region
        while (rootRegionAddress == null && localTimeouts < numRetries) {
          // Don't read root region until we're out of safe mode so we know
          // that the meta regions have been assigned.
          rootRegionAddress = zk.readRootRegionLocation();
          if (rootRegionAddress == null) {
            try {
              if (LOG.isDebugEnabled()) {
                LOG.debug("Sleeping " + getPauseTime(tries) +
                  "ms, waiting for root region.");

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

      reservedSpace.add(new byte[DEFAULT_SIZE_RESERVATION_BLOCK]);
    }
  }


  private void reinitializeZooKeeper() throws IOException {
    zooKeeperWrapper = new ZooKeeperWrapper(conf, this);
    watchMasterAddress();
  }

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

    this.metaRescanInterval =
      conf.getInt("hbase.master.meta.thread.rescanfrequency", 60 * 1000);


    this.sleeper = new Sleeper(this.threadWakeFrequency, this.closed);
    
    zooKeeperWrapper = new ZooKeeperWrapper(conf, this);
    zkMasterAddressWatcher = new ZKMasterAddressWatcher(this);
    serverManager = new ServerManager(this);
    regionManager = new RegionManager(this);
    
    writeAddressToZooKeeper();

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

     * Get this watcher's ZKW, instanciate it if necessary.
     * @return ZKW
     */
    public ZooKeeperWrapper getZooKeeperWrapper() throws IOException {
      if(zooKeeperWrapper == null) {
        zooKeeperWrapper = new ZooKeeperWrapper(conf, this);
      } 
      return zooKeeperWrapper;
    }

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

      }
      this.rootRegionLocation = rootRegion;
    }
    
    public HMasterInterface getMaster() throws MasterNotRunningException {
      ZooKeeperWrapper zk = null;
      try {
        zk = getZooKeeperWrapper();
      } catch (IOException e) {
        throw new MasterNotRunningException(e);
      }


      HServerAddress masterLocation = null;
      synchronized (this.masterLock) {
        for (int tries = 0;
          !this.closed &&
          !this.masterChecked && this.master == null &&
          tries < numRetries;
        tries++) {


          try {
            masterLocation = zk.readMasterAddressOrThrow();


            HMasterInterface tryMaster = (HMasterInterface)HBaseRPC.getProxy(
                HMasterInterface.class, HBaseRPCProtocolVersion.versionID, 
                masterLocation.getInetSocketAddress(), this.conf);

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

    private HRegionLocation locateRootRegion()
    throws IOException {


      // We lazily instantiate the ZooKeeper object because we don't want to
      // make the constructor have to throw IOException or handle it itself.
      ZooKeeperWrapper zk = getZooKeeperWrapper();


      HServerAddress rootRegionAddress = null;
      for (int tries = 0; tries < numRetries; tries++) {
        int localTimeouts = 0;
        // ask the master which server has the root region
        while (rootRegionAddress == null && localTimeouts < numRetries) {
          // Don't read root region until we're out of safe mode so we know
          // that the meta regions have been assigned.
          boolean outOfSafeMode = zk.checkOutOfSafeMode();
          if (outOfSafeMode) {
            rootRegionAddress = zk.readRootRegionLocation();
          }
          if (rootRegionAddress == null) {
            try {
              if (LOG.isDebugEnabled()) {
                LOG.debug("Sleeping " + getPauseTime(tries) +

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper


  /** 
   * @throws IOException
   */
  public void testWritesRootRegionLocation() throws IOException {
    ZooKeeperWrapper zooKeeper = new ZooKeeperWrapper(conf, EmptyWatcher.instance);


    boolean outOfSafeMode = zooKeeper.checkOutOfSafeMode();
    assertFalse(outOfSafeMode);


    HServerAddress zooKeeperRootAddress = zooKeeper.readRootRegionLocation();
    assertNull(zooKeeperRootAddress);


    HMaster master = cluster.getMaster();
    HServerAddress masterRootAddress = master.getRootRegionLocation();
    assertNull(masterRootAddress);


    new HTable(conf, HConstants.META_TABLE_NAME);


    outOfSafeMode = zooKeeper.checkOutOfSafeMode();
    assertTrue(outOfSafeMode);


    zooKeeperRootAddress = zooKeeper.readRootRegionLocation();
    assertNotNull(zooKeeperRootAddress);


    masterRootAddress = master.getRootRegionLocation();
    assertEquals(masterRootAddress, zooKeeperRootAddress);
  }

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

   * @throws IOException
   */
  public void testParentExists() throws IOException {
    String oldValue = conf.get("zookeeper.znode.safemode");
    conf.set("zookeeper.znode.safemode", "/a/b/c/d/e");
    ZooKeeperWrapper zooKeeper = new ZooKeeperWrapper(conf, EmptyWatcher.instance);
    assertTrue(zooKeeper.writeOutOfSafeMode());
    conf.set("zookeeper.znode.safemode", oldValue);
  }

View Full Code Here

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper

   * @throws InterruptedException
   */
  public void testClientSessionExpired() throws IOException, InterruptedException {
    new HTable(conf, HConstants.META_TABLE_NAME);


    ZooKeeperWrapper zkw = new ZooKeeperWrapper(conf, EmptyWatcher.instance);
    String quorumServers = zkw.getQuorumServers();
    int sessionTimeout = conf.getInt("zookeeper.session.timeout", 2 * 1000);
    HConnection connection = HConnectionManager.getConnection(conf);
    ZooKeeperWrapper connectionZK = connection.getZooKeeperWrapper();
    long sessionID = connectionZK.getSessionID();
    byte[] password = connectionZK.getSessionPassword();


    ZooKeeper zk = new ZooKeeper(quorumServers, sessionTimeout, EmptyWatcher.instance, sessionID, password);
    zk.close();


    Thread.sleep(sessionTimeout * 3);

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.