Package org.apache.hadoop.hbase.executor

Examples of org.apache.hadoop.hbase.executor.RegionTransitionData

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        + regionInfo.getRegionNameAsString());
    // Should have a ZK node in OPENING state
    try {
      String node = ZKAssign.getNodeName(watcher, regionInfo.getEncodedName());
      Stat stat = new Stat();
      RegionTransitionData dataInZNode = ZKAssign.getDataNoWatch(watcher, node,
          stat);
      if (dataInZNode == null) {
        LOG.warn("Data is null, node " + node + " no longer exists");
        return;
      }
      if (dataInZNode.getEventType() == EventType.RS_ZK_REGION_OPENED) {
        LOG.debug("Region has transitioned to OPENED, allowing "
            + "watched event handlers to process");
        return;
      } else if (dataInZNode.getEventType() != EventType.RS_ZK_REGION_OPENING &&
          dataInZNode.getEventType() != EventType.RS_ZK_REGION_FAILED_OPEN ) {
        LOG.warn("While timing out a region in state OPENING, "
            + "found ZK node in unexpected state: "
            + dataInZNode.getEventType());
        return;
      }
      invokeAssign(regionInfo);
    } catch (KeeperException ke) {
      LOG.error("Unexpected ZK exception timing out CLOSING region", ke);
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   * The AM's info could be old when OpenedRegionHandler
   * processing hasn't finished yet when server shutdown occurs.
   * @return whether the serverName currently hosts the region
   */
  public boolean isCarryingRegion(ServerName serverName, HRegionInfo hri) {
    RegionTransitionData data = null;
    try {
      data = ZKAssign.getData(master.getZooKeeper(), hri.getEncodedName());
    } catch (KeeperException e) {
      master.abort("Unexpected ZK exception reading unassigned node for region="
        + hri.getEncodedName(), e);
    }

    ServerName addressFromZK = (data != null && data.getOrigin() != null) ?
      data.getOrigin() : null;
    if (addressFromZK != null) {
      // if we get something from ZK, we will use the data
      boolean matchZK = (addressFromZK != null &&
        addressFromZK.equals(serverName));
      LOG.debug("based on ZK, current region=" + hri.getRegionNameAsString() +
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   */
  void createNodeSplitting(final ZooKeeperWatcher zkw, final HRegionInfo region,
      final ServerName serverName) throws KeeperException, IOException {
    LOG.debug(zkw.prefix("Creating ephemeral node for " +
      region.getEncodedName() + " in SPLITTING state"));
    RegionTransitionData data =
      new RegionTransitionData(EventType.RS_ZK_REGION_SPLITTING,
        region.getRegionName(), serverName);

    String node = ZKAssign.getNodeName(zkw, region.getEncodedName());
    if (!ZKUtil.createEphemeralNodeAndWatch(zkw, node, data.getBytes())) {
      throw new IOException("Failed create of ephemeral " + node);
    }
  }
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      ZKAssign.createNodeOffline(zkw, region, serverName);
      hrs.openRegion(region);

      int iTimes = 0;
      while (true) {
        RegionTransitionData rtd = ZKAssign.getData(zkw,
            region.getEncodedName());
        if (rtd != null && rtd.getEventType() == EventType.RS_ZK_REGION_OPENED) {
          break;
        }
        Thread.sleep(100);
        iTimes++;
        if (iTimes >= REGION_ONLINE_TIMEOUT) {
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    // adding region in pending close.
    am.regionsInTransition.put(REGIONINFO.getEncodedName(), new RegionState(REGIONINFO,
        State.SPLITTING, System.currentTimeMillis(), SERVERNAME_A));
    am.getZKTable().setEnabledTable(REGIONINFO.getTableNameAsString());

    RegionTransitionData data = new RegionTransitionData(EventType.RS_ZK_REGION_SPLITTING,
        REGIONINFO.getRegionName(), SERVERNAME_A);
    String node = ZKAssign.getNodeName(this.watcher, REGIONINFO.getEncodedName());
    // create znode in M_ZK_REGION_CLOSING state.
    ZKUtil.createAndWatch(this.watcher, node, data.getBytes());

    try {

      processServerShutdownHandler(ct, am, regionSplitDone);
      // check znode deleted or not.
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      am.getZKTable().setDisablingTable(REGIONINFO.getTableNameAsString());
    } else {
      am.getZKTable().setDisabledTable(REGIONINFO.getTableNameAsString());
    }

    RegionTransitionData data = new RegionTransitionData(EventType.M_ZK_REGION_CLOSING,
        REGIONINFO.getRegionName(), SERVERNAME_A);
    String node = ZKAssign.getNodeName(this.watcher, REGIONINFO.getEncodedName());
    // create znode in M_ZK_REGION_CLOSING state.
    ZKUtil.createAndWatch(this.watcher, node, data.getBytes());

    try {
      processServerShutdownHandler(ct, am, false);
      // check znode deleted or not.
      // In both cases the znode should be deleted.
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  // Copied from SplitTransaction rather than open the method over there in
  // the regionserver package.
  private static int createNodeSplitting(final ZooKeeperWatcher zkw,
      final HRegionInfo region, final ServerName serverName)
  throws KeeperException, IOException {
    RegionTransitionData data =
      new RegionTransitionData(EventType.RS_ZK_REGION_SPLITTING,
        region.getRegionName(), serverName);

    String node = ZKAssign.getNodeName(zkw, region.getEncodedName());
    if (!ZKUtil.createEphemeralNodeAndWatch(zkw, node, data.getBytes())) {
      throw new IOException("Failed create of ephemeral " + node);
    }
    // Transition node from SPLITTING to SPLITTING and pick up version so we
    // can be sure this znode is ours; version is needed deleting.
    return transitionNodeSplitting(zkw, region, serverName, -1);
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  boolean processRegionInTransition(final String encodedRegionName,
      final HRegionInfo regionInfo,
      final Map<ServerName,List<Pair<HRegionInfo,Result>>> deadServers)
  throws KeeperException, IOException {
    Stat stat = new Stat();
    RegionTransitionData data = ZKAssign.getDataAndWatch(watcher,
        encodedRegionName, stat);
    if (data == null) return false;
    HRegionInfo hri = regionInfo;
    if (hri == null) {
      if ((hri = getHRegionInfo(data)) == null) return false;
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  @Override
  public void nodeCreated(String path) {
    if(path.startsWith(watcher.assignmentZNode)) {
      try {
        Stat stat = new Stat();
        RegionTransitionData data = ZKAssign.getDataAndWatch(watcher, path, stat);
        if (data == null) {
          return;
        }
        handleRegion(data, stat.getVersion());
      } catch (KeeperException e) {
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  @Override
  public void nodeDataChanged(String path) {
    if(path.startsWith(watcher.assignmentZNode)) {
      try {
        Stat stat = new Stat();
        RegionTransitionData data = ZKAssign.getDataAndWatch(watcher, path, stat);
        if (data == null) {
          return;
        }
        handleRegion(data, stat.getVersion());
      } catch (KeeperException e) {
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Related Classes of org.apache.hadoop.hbase.executor.RegionTransitionData

  • org.apache.hadoop.hbase.master.AssignmentManager
  • org.apache.hadoop.hbase.master.AssignmentManager$TimeoutMonitor
  • org.apache.hadoop.hbase.master.TestAssignmentManager
  • org.apache.hadoop.hbase.master.TestMasterFailover
  • org.apache.hadoop.hbase.regionserver.handler.TestCloseRegionHandler
  • org.apache.hadoop.hbase.regionserver.handler.TestOpenRegionHandler
  • org.apache.hadoop.hbase.regionserver.SplitTransaction
  • org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster
  • org.apache.hadoop.hbase.util.TestHBaseFsck
  • org.apache.hadoop.hbase.zookeeper.ZKAssign
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