Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher

Package org.apache.hadoop.hbase.zookeeper

Examples of org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher

org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher
Acts as the single ZooKeeper Watcher. One instance of this is instantiated for each Master, RegionServer, and client process.
This is the only class that implements {@link Watcher}. Other internal classes which need to be notified of ZooKeeper events must register with the local instance of this watcher via {@link #registerListener}.
This class also holds and manages the connection to ZooKeeper. Code to deal with connection related events and exceptions are handled here.

      throws InterruptedException, ZooKeeperConnectionException, IOException,
      KeeperException {
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    log("Waiting for active/ready master");
    cluster.waitForActiveAndReadyMaster();
    zkw = new ZooKeeperWatcher(conf, "testOpenedRegionHandler", null);


    // Create a table with regions
    byte[] table = Bytes.toBytes(tableName);
    byte[] family = Bytes.toBytes("family");
    TEST_UTIL.createTable(table, family);

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   * @throws KeeperException if the zookeeper cluster cannot be reached
   */
  public RegionServerSnapshotManager(RegionServerServices rss)
      throws KeeperException {
    this.rss = rss;
    ZooKeeperWatcher zkw = rss.getZooKeeper();
    this.memberRpcs = new ZKProcedureMemberRpcs(zkw,
        SnapshotManager.ONLINE_SNAPSHOT_CONTROLLER_DESCRIPTION);


    // read in the snapshot request configuration properties
    Configuration conf = rss.getConfiguration();

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          // Open region first, then remove znode as though it'd been hijacked.
          HRegion region = super.openRegion();


          // Don't actually open region BUT remove the znode as though it'd
          // been hijacked on us.
          ZooKeeperWatcher zkw = this.server.getZooKeeper();
          String node = ZKAssign.getNodeName(zkw, hri.getEncodedName());
          try {
            ZKUtil.deleteNodeFailSilent(zkw, node);
          } catch (KeeperException e) {
            throw new RuntimeException("Ugh failed delete of " + node, e);

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    final int NUM_REGIONS_TO_CREATE = 40;
    final int NUM_ROWS_PER_REGION = 100;


    startCluster(NUM_RS); // NUM_RS=6.


    ZooKeeperWatcher zkw = new ZooKeeperWatcher(conf,
        "distributed log splitting test", null);


    HTable ht = installTable(zkw, "table", "family", NUM_REGIONS_TO_CREATE);
    populateDataInTable(NUM_ROWS_PER_REGION, "family");

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    List<RegionServerThread> rsts = cluster.getLiveRegionServerThreads();
    
    Path rootdir = FSUtils.getRootDir(conf);


    installTable(new ZooKeeperWatcher(conf, "table-creation", null),
        "table", "family", 40);
    byte[] table = Bytes.toBytes("table");
    List<HRegionInfo> regions = null;
    HRegionServer hrs = null;
    for (int i = 0; i < NUM_RS; i++) {

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    // turn off load balancing to prevent regions from moving around otherwise
    // they will consume recovered.edits
    master.balanceSwitch(false);


    List<RegionServerThread> rsts = cluster.getLiveRegionServerThreads();
    final ZooKeeperWatcher zkw = new ZooKeeperWatcher(conf, "table-creation", null);
    HTable ht = installTable(zkw, "table", "f", NUM_REGIONS_TO_CREATE);


    List<HRegionInfo> regions = null;
    HRegionServer hrs = null;
    for (int i = 0; i < NUM_RS; i++) {

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    HRegionServer hrs = rsts.get(0).getRegionServer();
    Path rootdir = FSUtils.getRootDir(conf);
    final Path logDir = new Path(rootdir,
        HLog.getHLogDirectoryName(hrs.getServerName().toString()));


    installTable(new ZooKeeperWatcher(conf, "table-creation", null),
        "table", "family", 40);
    makeHLog(hrs.getWAL(), hrs.getOnlineRegions(), "table",
        NUM_LOG_LINES, 100);


    new Thread() {

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        utility.setZkCluster(miniZK);
      }
      utility.startMiniCluster();
      utilities[i] = utility;
      configurations[i] = conf;
      new ZooKeeperWatcher(conf, "cluster" + i, null, true);
    }
  }

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        ReplicationSourceDummy.class.getCanonicalName());
    conf.setBoolean(HConstants.REPLICATION_ENABLE_KEY, true);
    utility = new HBaseTestingUtility(conf);
    utility.startMiniZKCluster();


    zkw = new ZooKeeperWatcher(conf, "test", null);
    ZKUtil.createWithParents(zkw, "/hbase/replication");
    ZKUtil.createWithParents(zkw, "/hbase/replication/peers/1");
    ZKUtil.setData(zkw, "/hbase/replication/peers/1",
        Bytes.toBytes(conf.get(HConstants.ZOOKEEPER_QUORUM) + ":"
            + conf.get(HConstants.ZOOKEEPER_CLIENT_PORT) + ":/1"));

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    }


    @Override
    public ZooKeeperWatcher getZooKeeper() {
      try {
        return new ZooKeeperWatcher(getConfiguration(), "dummy server", this);
      } catch (IOException e) {
        e.printStackTrace();
      }
      return null;
    }

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