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.

   * Used when a region has been closed but should be reassigned.
   * @param regionInfo
   */
  public void setOffline(HRegionInfo regionInfo) {
    synchronized (this.regions) {
      HServerInfo serverInfo = this.regions.remove(regionInfo);
      if (serverInfo == null) return;
      Set<HRegionInfo> serverRegions = this.servers.get(serverInfo);
      if (!serverRegions.remove(regionInfo)) {
        LOG.warn("No " + regionInfo + " on " + serverInfo);
      }

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          "already in transition (" + state.getState() + ")");
        return;
      }
    }
    // Send CLOSE RPC
    HServerInfo server = null;
    synchronized (this.regions) {
      server = regions.get(region);
    }
    try {
      if (serverManager.sendRegionClose(server, state.getRegion())) {

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    // Iterate regions in META
    for (Result result : results) {
      Pair<HRegionInfo,HServerInfo> region =
        MetaReader.metaRowToRegionPairWithInfo(result);
      if (region == null) continue;
      HServerInfo regionLocation = region.getSecond();
      HRegionInfo regionInfo = region.getFirst();
      String disablingTableName = regionInfo.getTableDesc().getNameAsString();
      if (regionLocation == null) {
        // Region not being served, add to region map with no assignment
        // If this needs to be assigned out, it will also be in ZK as RIT
        // add if the table is not in disabled state
        if (false == checkIfRegionBelongsToDisabled(regionInfo)) {
          this.regions.put(regionInfo, null);
        }
        if (checkIfRegionBelongsToDisabling(regionInfo)) {
          disablingTables.add(disablingTableName);
        }
      } else if (!serverManager.isServerOnline(regionLocation.getServerName())) {
        // Region is located on a server that isn't online
        List<Pair<HRegionInfo,Result>> offlineRegions =
          offlineServers.get(regionLocation.getServerName());
        if (offlineRegions == null) {
          offlineRegions = new ArrayList<Pair<HRegionInfo,Result>>(1);
          offlineServers.put(regionLocation.getServerName(), offlineRegions);
        }
        offlineRegions.add(new Pair<HRegionInfo,Result>(regionInfo, result));
      } else {
        // Region is being served and on an active server
        // add only if region not in disabled table

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    // Clean out any existing assignment plans for this server
    synchronized (this.regionPlans) {
      for (Iterator <Map.Entry<String, RegionPlan>> i =
          this.regionPlans.entrySet().iterator(); i.hasNext();) {
        Map.Entry<String, RegionPlan> e = i.next();
        HServerInfo otherHsi = e.getValue().getDestination();
        // The HSI will be null if the region is planned for a random assign.
        if (otherHsi != null && otherHsi.equals(hsi)) {
          // Use iterator's remove else we'll get CME
          i.remove();
        }
      }
    }

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    } catch (KeeperException e) {
      LOG.warn("Exception while validating RIT during split report", e);
    }
    synchronized (this.regions) {         
      //one daughter is already online, do nothing
      HServerInfo hsia = this.regions.get(a);
      if (hsia != null){
        LOG.warn("Trying to process the split of " +a.getEncodedName()+ ", " +
          "but it was already done and one daughter is on region server " + hsia);
        return;
      }

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    Map<HServerInfo, List<HRegionInfo>> result = null;
    synchronized (this.regions) {
      result = new HashMap<HServerInfo, List<HRegionInfo>>(this.servers.size());
      for (Map.Entry<HServerInfo, Set<HRegionInfo>> e: this.servers.entrySet()) {
        List<HRegionInfo> shallowCopy = new ArrayList<HRegionInfo>(e.getValue());
        HServerInfo clone = new HServerInfo(e.getKey());
        // Set into server load the number of regions this server is carrying
        // The load balancer calculation needs it at least and its handy.
        clone.getLoad().setNumberOfRegions(e.getValue().size());
        result.put(clone, shallowCopy);
      }
    }
    return result;
  }

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    // not yet run, or from a server whose fail we are currently processing.
    // Test its host+port combo is present in serverAddresstoServerInfo.  If it
    // is, reject the server and trigger its expiration. The next time it comes
    // in, it should have been removed from serverAddressToServerInfo and queued
    // for processing by ProcessServerShutdown.
    HServerInfo info = new HServerInfo(serverInfo);
    checkIsDead(info.getServerName(), "STARTUP");
    checkAlreadySameHostPort(info);
    checkClockSkew(info, serverCurrentTime);
    recordNewServer(info, false, null);
  }

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   * @throws PleaseHoldException
   */
  void checkAlreadySameHostPort(final HServerInfo serverInfo)
  throws PleaseHoldException {
    String hostAndPort = serverInfo.getServerAddress().toString();
    HServerInfo existingServer =
      haveServerWithSameHostAndPortAlready(serverInfo.getHostnamePort());
    if (existingServer != null) {
      String message = "Server start rejected; we already have " + hostAndPort +
        " registered; existingServer=" + existingServer + ", newServer=" + serverInfo;
      LOG.info(message);
      if (existingServer.getStartCode() < serverInfo.getStartCode()) {
        LOG.info("Triggering server recovery; existingServer " +
          existingServer.getServerName() + " looks stale");
        expireServer(existingServer);
      }
      throw new PleaseHoldException(message);
    }
  }

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   */
  HMsg [] regionServerReport(final HServerInfo serverInfo,
    final HMsg [] msgs, final HRegionInfo[] mostLoadedRegions)
  throws IOException {
    // Be careful. This method does returns in the middle.
    HServerInfo info = new HServerInfo(serverInfo);


    // Check if dead.  If it is, it'll get a 'You Are Dead!' exception.
    checkIsDead(info.getServerName(), "REPORT");


    // If we don't know this server, tell it shutdown.
    HServerInfo storedInfo = this.onlineServers.get(info.getServerName());
    if (storedInfo == null) {
      // Maybe we already have this host+port combo and its just different
      // start code?
      checkAlreadySameHostPort(info);
      // Just let the server in. Presume master joining a running cluster.

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  /**
   * @param serverName
   * @return True if we removed server from the list.
   */
  private boolean removeServerInfo(final String serverName) {
    HServerInfo info = this.onlineServers.remove(serverName);
    if (info != null) {
      return true;
    }
    return false;
  }

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