Package org.apache.accumulo.fate.zookeeper

Examples of org.apache.accumulo.fate.zookeeper.IZooReaderWriter

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  public static long reserveTable(String tableId, long tid, boolean writeLock, boolean tableMustExist, TableOperation op) throws Exception {
    if (getLock(tableId, tid, writeLock).tryLock()) {
      if (tableMustExist) {
        Instance instance = HdfsZooInstance.getInstance();
        IZooReaderWriter zk = ZooReaderWriter.getRetryingInstance();
        if (!zk.exists(ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + tableId))
          throw new ThriftTableOperationException(tableId, "", op, TableOperationExceptionType.NOTFOUND, "Table does not exists");
      }
      log.info("table " + tableId + " (" + Long.toHexString(tid) + ") locked for " + (writeLock ? "write" : "read") + " operation: " + op);
      return 0;
    } else
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  public static long reserveHdfsDirectory(String directory, long tid) throws KeeperException, InterruptedException {
    Instance instance = HdfsZooInstance.getInstance();
   
    String resvPath = ZooUtil.getRoot(instance) + Constants.ZHDFS_RESERVATIONS + "/" + new String(Base64.encodeBase64(directory.getBytes()));
   
    IZooReaderWriter zk = ZooReaderWriter.getRetryingInstance();
   
    if (ZooReservation.attempt(zk, resvPath, String.format("%016x", tid), "")) {
      return 0;
    } else
      return 50;
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  private void upgradeZookeeper() {
    if (Accumulo.getAccumuloPersistentVersion(fs) == Constants.PREV_DATA_VERSION) {
      try {
        log.info("Upgrading zookeeper");
       
        IZooReaderWriter zoo = ZooReaderWriter.getInstance();
       
        zoo.recursiveDelete(ZooUtil.getRoot(instance) + "/loggers", NodeMissingPolicy.SKIP);
        zoo.recursiveDelete(ZooUtil.getRoot(instance) + "/dead/loggers", NodeMissingPolicy.SKIP);

        zoo.putPersistentData(ZooUtil.getRoot(instance) + Constants.ZRECOVERY, new byte[] {'0'}, NodeExistsPolicy.SKIP);
       
        for (String id : Tables.getIdToNameMap(instance).keySet()) {
         
          zoo.putPersistentData(ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + id + Constants.ZTABLE_COMPACT_CANCEL_ID, "0".getBytes(),
              NodeExistsPolicy.SKIP);
        }
      } catch (Exception ex) {
        log.fatal("Error performing upgrade", ex);
        System.exit(1);
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    if (force) {
      String tserver = AddressUtil.toString(server.getLocation());
      String path = ZooUtil.getRoot(master.getInstance()) + Constants.ZTSERVERS + "/" + tserver;
      ZooLock.deleteLock(path);
      path = ZooUtil.getRoot(master.getInstance()) + Constants.ZDEADTSERVERS + "/" + tserver;
      IZooReaderWriter zoo = ZooReaderWriter.getInstance();
      zoo.putPersistentData(path, "forced down".getBytes(), NodeExistsPolicy.OVERWRITE);
      return null;
    }
   
    // TODO move this to isReady() and drop while loop? - ACCUMULO-1259
    Listener listener = master.getEventCoordinator().getListener();
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    }
  }
 
  private void registerInZooKeeper(String name) throws Exception {
    String root = ZooUtil.getRoot(serverConfiguration.getInstance()) + Constants.ZTRACERS;
    IZooReaderWriter zoo = ZooReaderWriter.getInstance();
    String path = zoo.putEphemeralSequential(root + "/trace-", name.getBytes());
    zoo.exists(path, this);
  }
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   * @return an instance that retries when Zookeeper connection errors occur.
   */
  public static synchronized IZooReaderWriter getRetryingInstance() {
   
    if (retryingInstance == null) {
      final IZooReaderWriter inst = getInstance();
     
      InvocationHandler ih = new InvocationHandler() {
        @Override
        public Object invoke(Object obj, Method method, Object[] args) throws Throwable {
          long retryTime = 250;
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      return rdr.exists(path);
    }
   
    public static void start(String type, long tid) throws KeeperException, InterruptedException {
      Instance instance = HdfsZooInstance.getInstance();
      IZooReaderWriter writer = ZooReaderWriter.getInstance();
      writer.putPersistentData(ZooUtil.getRoot(instance) + "/" + type, new byte[] {}, NodeExistsPolicy.OVERWRITE);
      writer.putPersistentData(ZooUtil.getRoot(instance) + "/" + type + "/" + tid, new byte[] {}, NodeExistsPolicy.OVERWRITE);
      writer.putPersistentData(ZooUtil.getRoot(instance) + "/" + type + "/" + tid + "-running", new byte[] {}, NodeExistsPolicy.OVERWRITE);
    }
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      writer.putPersistentData(ZooUtil.getRoot(instance) + "/" + type + "/" + tid + "-running", new byte[] {}, NodeExistsPolicy.OVERWRITE);
    }
   
    public static void stop(String type, long tid) throws KeeperException, InterruptedException {
      Instance instance = HdfsZooInstance.getInstance();
      IZooReaderWriter writer = ZooReaderWriter.getInstance();
      writer.recursiveDelete(ZooUtil.getRoot(instance) + "/" + type + "/" + tid, NodeMissingPolicy.SKIP);
    }
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      writer.recursiveDelete(ZooUtil.getRoot(instance) + "/" + type + "/" + tid, NodeMissingPolicy.SKIP);
    }
   
    public static void cleanup(String type, long tid) throws KeeperException, InterruptedException {
      Instance instance = HdfsZooInstance.getInstance();
      IZooReaderWriter writer = ZooReaderWriter.getInstance();
      writer.recursiveDelete(ZooUtil.getRoot(instance) + "/" + type + "/" + tid, NodeMissingPolicy.SKIP);
      writer.recursiveDelete(ZooUtil.getRoot(instance) + "/" + type + "/" + tid + "-running", NodeMissingPolicy.SKIP);
    }
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    AdminUtil<Master> admin = new AdminUtil<Master>();
   
    Instance instance = HdfsZooInstance.getInstance();
    String path = ZooUtil.getRoot(instance) + Constants.ZFATE;
    String masterPath = ZooUtil.getRoot(instance) + Constants.ZMASTER_LOCK;
    IZooReaderWriter zk = ZooReaderWriter.getRetryingInstance();
    ZooStore<Master> zs = new ZooStore<Master>(path, zk);
   
    if (jc.getParsedCommand().equals("fail")) {
      admin.prepFail(zs, zk, masterPath, args[1]);
    } else if (jc.getParsedCommand().equals("delete")) {
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Related Classes of org.apache.accumulo.fate.zookeeper.IZooReaderWriter

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  • org.apache.accumulo.master.Master
  • org.apache.accumulo.master.MasterClientServiceHandler
  • org.apache.accumulo.master.tableOps.CancelCompactions
  • org.apache.accumulo.master.tableOps.CompactionDriver
  • org.apache.accumulo.master.tableOps.CompactRange
  • org.apache.accumulo.master.tableOps.RenameNamespace
  • org.apache.accumulo.master.tableOps.RenameTable
  • org.apache.accumulo.master.tableOps.Utils
  • org.apache.accumulo.master.tserverOps.ShutdownTServer
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