Package org.apache.hadoop.hbase

Examples of org.apache.hadoop.hbase.HServerInfo$LoadComparator

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      // happen after check of MSG_REPORT_EXITING above, since region server
      // will send us one of these messages after it gets MSG_REGIONSERVER_STOP
      return new HMsg [] {REGIONSERVER_STOP};
    }

    HServerInfo storedInfo = serversToServerInfo.get(serverName);
    if (storedInfo == null) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("received server report from unknown server: " + serverName);
      }

      // The HBaseMaster may have been restarted.
      // Tell the RegionServer to start over and call regionServerStartup()
      return new HMsg[]{CALL_SERVER_STARTUP};
    } else if (storedInfo.getStartCode() != serverInfo.getStartCode()) {
      // This state is reachable if:
      //
      // 1) RegionServer A started
      // 2) RegionServer B started on the same machine, then
      //    clobbered A in regionServerStartup.
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  }
 
  /** Cancel a server's lease and update its load information */
  private boolean cancelLease(final String serverName) {
    boolean leaseCancelled = false;
    HServerInfo info = serversToServerInfo.remove(serverName);
    // Only cancel lease and update load information once.
    // This method can be called a couple of times during shutdown.
    if (info != null) {
      LOG.info("Cancelling lease for " + serverName);
      if (master.getRootRegionLocation() != null &&
        info.getServerAddress().equals(master.getRootRegionLocation())) {
        master.regionManager.unsetRootRegion();
      }
      try {
        serverLeases.cancelLease(serverName);
      } catch (LeaseException e) {
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    }

    public void leaseExpired() {
      LOG.info(server + " lease expired");
      // Remove the server from the known servers list and update load info
      HServerInfo info = serversToServerInfo.remove(server);
      boolean rootServer = false;
      if (info != null) {
        HServerAddress root = master.getRootRegionLocation();
        if (root != null && root.equals(info.getServerAddress())) {
          // NOTE: If the server was serving the root region, we cannot reassign
          // it here because the new server will start serving the root region
          // before ProcessServerShutdown has a chance to split the log file.
          master.regionManager.unsetRootRegion();
          rootServer = true;
        }
        String serverName = info.getServerAddress().toString();
        HServerLoad load = serversToLoad.remove(serverName);
        if (load != null) {
          synchronized (loadToServers) {
            Set<String> servers = loadToServers.get(load);
            if (servers != null) {
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          loadToServers.put(load, servers);
        }
      }
    }

    HServerInfo storedInfo = serversToServerInfo.remove(s);
    if (storedInfo != null && !master.closed.get()) {
      // The startup message was from a known server with the same name.
      // Timeout the old one right away.
      HServerAddress root = master.getRootRegionLocation();
      if (root != null && root.equals(storedInfo.getServerAddress())) {
        master.regionManager.unassignRootRegion();
      }
      master.delayedToDoQueue.put(new ProcessServerShutdown(master, storedInfo));
    }
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      // happen after check of MSG_REPORT_EXITING above, since region server
      // will send us one of these messages after it gets MSG_REGIONSERVER_STOP
      return new HMsg [] {HMsg.REGIONSERVER_STOP};
    }

    HServerInfo storedInfo = serversToServerInfo.get(serverName);
    if (storedInfo == null) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("received server report from unknown server: " + serverName);
      }

      // The HBaseMaster may have been restarted.
      // Tell the RegionServer to start over and call regionServerStartup()
      return new HMsg[]{HMsg.CALL_SERVER_STARTUP};
    } else if (storedInfo.getStartCode() != serverInfo.getStartCode()) {
      // This state is reachable if:
      //
      // 1) RegionServer A started
      // 2) RegionServer B started on the same machine, then
      //    clobbered A in regionServerStartup.
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  }
 
  /** Cancel a server's lease and update its load information */
  private boolean cancelLease(final String serverName) {
    boolean leaseCancelled = false;
    HServerInfo info = serversToServerInfo.remove(serverName);
    if (info != null) {
      // Only cancel lease and update load information once.
      // This method can be called a couple of times during shutdown.
      if (master.getRootRegionLocation() != null &&
        info.getServerAddress().equals(master.getRootRegionLocation())) {
        master.regionManager.unassignRootRegion();
      }
      LOG.info("Cancelling lease for " + serverName);
      try {
        serverLeases.cancelLease(serverName);
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    this.server = HbaseRPC.getServer(this, address.getBindAddress(),
      address.getPort(), conf.getInt("hbase.regionserver.handler.count", 10),
      false, conf);
    // Address is givin a default IP for the moment. Will be changed after
    // calling the master.
    this.serverInfo = new HServerInfo(new HServerAddress(
      new InetSocketAddress(DEFAULT_HOST,
      this.server.getListenerAddress().getPort())), System.currentTimeMillis(),
      this.conf.getInt("hbase.regionserver.info.port", 60030));
    this.numRegionsToReport =                                       
      conf.getInt("hbase.regionserver.numregionstoreport", 10);     
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    }

    public void leaseExpired() {
      LOG.info(server + " lease expired");
      // Remove the server from the known servers list and update load info
      HServerInfo info = serversToServerInfo.remove(server);
      if (info != null) {
        HServerAddress root = master.getRootRegionLocation();
        if (root != null && root.equals(info.getServerAddress())) {
          master.regionManager.unassignRootRegion();
        }
        String serverName = info.getServerAddress().toString();
        HServerLoad load = serversToLoad.remove(serverName);
        if (load != null) {
          synchronized (loadToServers) {
            Set<String> servers = loadToServers.get(load);
            if (servers != null) {
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      address.getPort(), conf.getInt("hbase.regionserver.handler.count", 10),
      false, conf);
    this.server.setErrorHandler(this);
    // Address is giving a default IP for the moment. Will be changed after
    // calling the master.
    this.serverInfo = new HServerInfo(new HServerAddress(
      new InetSocketAddress(address.getBindAddress(),
      this.server.getListenerAddress().getPort())), System.currentTimeMillis(),
      this.conf.getInt("hbase.regionserver.info.port", 60030), machineName);
    if (this.serverInfo.getServerAddress() == null) {
      throw new NullPointerException("Server address cannot be null; " +
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   * @param serverInfo
   * @throws Leases.LeaseStillHeldException
   */
  public void regionServerStartup(final HServerInfo serverInfo)
  throws Leases.LeaseStillHeldException {
    HServerInfo info = new HServerInfo(serverInfo);
    String serverName = HServerInfo.getServerName(info);
    if (serversToServerInfo.containsKey(serverName) ||
        deadServers.contains(serverName)) {
      LOG.debug("Server start was rejected: " + serverInfo);
      LOG.debug("serversToServerInfo.containsKey: " + serversToServerInfo.containsKey(serverName));
      LOG.debug("deadServers.contains: " + deadServers.contains(serverName));
      throw new Leases.LeaseStillHeldException(serverName);
    }
   
    LOG.info("Received start message from: " + serverName);
    // Go on to process the regionserver registration.
    HServerLoad load = serversToLoad.remove(serverName);
    if (load != null) {
      // The startup message was from a known server.
      // Remove stale information about the server's load.
      synchronized (loadToServers) {
        Set<String> servers = loadToServers.get(load);
        if (servers != null) {
          servers.remove(serverName);
          if (servers.size() > 0)
            loadToServers.put(load, servers);
          else
            loadToServers.remove(load);
        }
      }
    }
    HServerInfo storedInfo = serversToServerInfo.remove(serverName);
    if (storedInfo != null && !master.closed.get()) {
      // The startup message was from a known server with the same name.
      // Timeout the old one right away.
      master.getRootRegionLocation();
      try {
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