Examples of org.apache.hadoop.hbase.HServerInfo

org.apache.hadoop.hbase.HServerInfo
HServerInfo contains metainfo about an HRegionServer, Currently it only contains the server start code. In the future it will contain information about the source machine and load statistics.

      // 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.

View Full Code Here

  }
  
  /** 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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