Examples of org.apache.hadoop.hbase.HServerLoad$RegionLoad

org.apache.hadoop.hbase.HServerLoad
Encapsulates per-region loading metrics.

    return allUserRegionsOffline;
  }


  void tryRegionServerReport()
  throws IOException {
    HServerLoad hsl = buildServerLoad();
    // Why we do this?
    this.requestCount.set(0);
    try {
      this.hbaseMaster.regionServerReport(this.serverNameFromMasterPOV.getVersionedBytes(), hsl);
    } catch (IOException ioe) {

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    for (HRegion region: regions) {
      regionLoads.put(region.getRegionName(), createRegionLoad(region));
    }
    MemoryUsage memory =
      ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
    return new HServerLoad(requestCount.get(),(int)metrics.getRequests(),
      (int)(memory.getUsed() / 1024 / 1024),
      (int) (memory.getMax() / 1024 / 1024), regionLoads,
      this.hlog.getCoprocessorHost().getCoprocessors());
  }

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      StorageClusterStatusModel model = new StorageClusterStatusModel();
      model.setRegions(status.getRegionsCount());
      model.setRequests(status.getRequestsCount());
      model.setAverageLoad(status.getAverageLoad());
      for (ServerName info: status.getServers()) {
        HServerLoad load = status.getLoad(info);
        StorageClusterStatusModel.Node node =
          model.addLiveNode(
            info.getHostname() + ":" +
            Integer.toString(info.getPort()),
            info.getStartcode(), load.getUsedHeapMB(),
            load.getMaxHeapMB());
        node.setRequests(load.getNumberOfRequests());
        for (HServerLoad.RegionLoad region: load.getRegionsLoad().values()) {
          node.addRegion(region.getName(), region.getStores(),
            region.getStorefiles(), region.getStorefileSizeMB(),
            region.getMemStoreSizeMB(), region.getStorefileIndexSizeMB(),
            region.getReadRequestsCount(), region.getWriteRequestsCount(),
            region.getRootIndexSizeKB(), region.getTotalStaticIndexSizeKB(),

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        targetServers.add(Bytes.toBytes(serverName));
      }


      List<byte[]> victimRegions = new LinkedList<byte[]>();
      for (ServerName server : victimServers) {
        HServerLoad serverLoad = status.getLoad(server);
        // Ugh.
        List<byte[]> regions = new LinkedList<byte[]>(serverLoad.getRegionsLoad().keySet());
        int victimRegionCount = (int)Math.ceil(fractionOfRegions * regions.size());
        LOG.debug("Removing " + victimRegionCount + " regions from " + server.getServerName());
        for (int i = 0; i < victimRegionCount; ++i) {
          int victimIx = random.nextInt(regions.size());
          String regionId = HRegionInfo.encodeRegionName(regions.remove(victimIx));

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   * @param info The region server informations
   * @param useInfoLoad True if the load from the info should be used
   *                    like under a master failover
   */
  void recordNewServer(HServerInfo info, boolean useInfoLoad) {
    HServerLoad load = useInfoLoad ? info.getLoad() : new HServerLoad();
    String serverName = info.getServerName();
    info.setLoad(load);
    // We must set this watcher here because it can be set on a fresh start
    // or on a failover
    Watcher watcher = new ServerExpirer(new HServerInfo(info));

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  private HMsg[] processRegionServerAllsWell(HServerInfo serverInfo,
      final HRegionInfo[] mostLoadedRegions, HMsg[] msgs)
  throws IOException {
    // Refresh the info object and the load information
    this.serversToServerInfo.put(serverInfo.getServerName(), serverInfo);
    HServerLoad load = this.serversToLoad.get(serverInfo.getServerName());
    if (load != null) {
      this.master.getMetrics().incrementRequests(load.getNumberOfRequests());
      if (!load.equals(serverInfo.getLoad())) {
        updateLoadToServers(serverInfo.getServerName(), load);
      }
    }


    // Set the current load information

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      LOG.warn("Already processing shutdown of " + serverName);
      return;
    }
    // Remove the server from the known servers lists and update load info
    this.serversToServerInfo.remove(serverName);
    HServerLoad load = this.serversToLoad.remove(serverName);
    if (load != null) {
      synchronized (this.loadToServers) {
        Set<String> servers = this.loadToServers.get(load);
        if (servers != null) {
          servers.remove(serverName);

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        if ((now - lastMsg) >= msgInterval || !outboundMessages.isEmpty()) {
          try {
            doMetrics();
            MemoryUsage memory =
              ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
            HServerLoad hsl = new HServerLoad(requestCount.get(),
              (int)(memory.getUsed()/1024/1024),
              (int)(memory.getMax()/1024/1024));
            for (HRegion r: onlineRegions.values()) {
              hsl.addRegionInfo(createRegionLoad(r));
            }
            this.serverInfo.setLoad(hsl);
            this.requestCount.set(0);
            addOutboundMsgs(outboundMessages);
            HMsg msgs[] = this.hbaseMaster.regionServerReport(

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    while(!stopRequested.get()) {
      try {
        this.requestCount.set(0);
        MemoryUsage memory =
          ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
        HServerLoad hsl = new HServerLoad(0, (int)memory.getUsed()/1024/1024,
          (int)memory.getMax()/1024/1024);
        this.serverInfo.setLoad(hsl);
        if (LOG.isDebugEnabled())
          LOG.debug("sending initial server load: " + hsl);
        lastMsg = System.currentTimeMillis();

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   * @param mostLoadedRegions
   * @param returnMsgs
   */
  void assignRegions(HServerInfo info, HRegionInfo[] mostLoadedRegions,
      ArrayList<HMsg> returnMsgs) {
    HServerLoad thisServersLoad = info.getLoad();
    boolean isSingleServer = this.master.numServers() == 1;


    // figure out what regions need to be assigned and aren't currently being
    // worked on elsewhere.
    Set<RegionState> regionsToAssign =

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org.apache.hadoop.hbase.master.RegionManager

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org.apache.hadoop.hbase.master.ServerManager

org.apache.hadoop.hbase.master.ServerManager$ServerExpirer

org.apache.hadoop.hbase.master.TestAssignmentManager

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org.apache.hadoop.hbase.rest.StorageClusterStatusResource

org.apache.hadoop.hbase.stargate.StorageClusterStatusResource

org.apache.hadoop.hbase.util.ChaosMonkey$UnbalanceRegionsAction

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