Examples of org.apache.hadoop.hbase.MasterNotRunningException

org.apache.hadoop.hbase.MasterNotRunningException
Thrown if the master is not running

   */
  public void modifyColumn(final byte [] tableName, final byte [] columnName, 
    HColumnDescriptor descriptor)
  throws IOException {
    if (this.master == null) {
      throw new MasterNotRunningException("master has been shut down");
    }
    HTableDescriptor.isLegalTableName(tableName);
    try {
      this.master.modifyColumn(tableName, columnName, descriptor);
    } catch (RemoteException e) {

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   * @throws IOException
   */
  public void modifyTableMeta(final byte [] tableName, HTableDescriptor desc)
  throws IOException {
    if (this.master == null) {
      throw new MasterNotRunningException("master has been shut down");
    }
    HTableDescriptor.isLegalTableName(tableName);
    try {
      this.master.modifyTableMeta(tableName, desc);
    } catch (RemoteException e) {

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   * Shuts down the HBase instance 
   * @throws IOException
   */
  public synchronized void shutdown() throws IOException {
    if (this.master == null) {
      throw new MasterNotRunningException("master has been shut down");
    }
    try {
      this.master.shutdown();
    } catch (RemoteException e) {
      throw RemoteExceptionHandler.decodeRemoteException(e);

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  /** {@inheritDoc} */
  public void createTable(HTableDescriptor desc)
  throws IOException {    
    if (!isMasterRunning()) {
      throw new MasterNotRunningException();
    }
    HRegionInfo newRegion = new HRegionInfo(desc, null, null);


    for (int tries = 0; tries < numRetries; tries++) {
      try {

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          errorMsg = "The node " + zkw.baseZNode+" is not in ZooKeeper. "
            + "It should have been written by the master. "
            + "Check the value configured in 'zookeeper.znode.parent'. "
            + "There could be a mismatch with the one configured in the master.";
          LOG.error(errorMsg);
          throw new MasterNotRunningException(errorMsg);
        }
      } catch (KeeperException e) {
        errorMsg = "Can't get connection to ZooKeeper: " + e.getMessage();
        LOG.error(errorMsg);
        throw new MasterNotRunningException(errorMsg, e);
      }
    }

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          checkIfBaseNodeAvailable(zkw);
          ServerName sn = MasterAddressTracker.getMasterAddress(zkw);
          if (sn == null) {
            String msg = "ZooKeeper available but no active master location found";
            LOG.info(msg);
            throw new MasterNotRunningException(msg);
          }
          if (isDeadServer(sn)) {
            throw new MasterNotRunningException(sn + " is dead.");
          }
          // Use the security info interface name as our stub key
          String key = getStubKey(getServiceName(), sn.getHostAndPort());
          connectionLock.putIfAbsent(key, key);
          Object stub = null;

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                  exceptionCaught);


                try {
                  Thread.sleep(pauseTime);
                } catch (InterruptedException e) {
                  throw new MasterNotRunningException(
                      "Thread was interrupted while trying to connect to master.", e);
                }
              } else {
                // Enough tries, we stop now
                LOG.info("getMaster attempt " + tries + " of " + numTries +
                    " failed; no more retrying.", exceptionCaught);
                throw new MasterNotRunningException(exceptionCaught);
              }
          }


          if (stub == null) {
            // implies this.closed true
            throw new MasterNotRunningException("Connection was closed while trying to get master");
          }
          return stub;
        }
      }

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  @Override
  public void createTable(HTableDescriptor hTableDescriptor,
    byte [][] splitKeys)
  throws IOException {
    if (!isMasterRunning()) {
      throw new MasterNotRunningException();
    }


    String namespace = hTableDescriptor.getTableName().getNamespaceAsString();
    getNamespaceDescriptor(namespace); // ensure namespace exists

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    public HMasterInterface getMaster() throws MasterNotRunningException {
      ZooKeeperWrapper zk = null;
      try {
        zk = getZooKeeperWrapper();
      } catch (IOException e) {
        throw new MasterNotRunningException(e);
      }


      HServerAddress masterLocation = null;
      synchronized (this.masterLock) {
        for (int tries = 0;
          !this.closed &&
          !this.masterChecked && this.master == null &&
          tries < numRetries;
        tries++) {


          try {
            masterLocation = zk.readMasterAddressOrThrow();


            HMasterInterface tryMaster = (HMasterInterface)HBaseRPC.getProxy(
                HMasterInterface.class, HBaseRPCProtocolVersion.versionID, 
                masterLocation.getInetSocketAddress(), this.conf);
            
            if (tryMaster.isMasterRunning()) {
              this.master = tryMaster;
              this.masterLock.notifyAll();
              break;
            }
            
          } catch (IOException e) {
            if (tries == numRetries - 1) {
              // This was our last chance - don't bother sleeping
              LOG.info("getMaster attempt " + tries + " of " + this.numRetries +
                " failed; no more retrying.", e);
              break;
            }
            LOG.info("getMaster attempt " + tries + " of " + this.numRetries +
              " failed; retrying after sleep of " +
              getPauseTime(tries), e);
          }


          // Cannot connect to master or it is not running. Sleep & retry
          try {
            this.masterLock.wait(getPauseTime(tries));
          } catch (InterruptedException e) {
            // continue
          }
        }
        this.masterChecked = true;
      }
      if (this.master == null) {
        if (masterLocation == null) {
          throw new MasterNotRunningException();
        }
        throw new MasterNotRunningException(masterLocation.toString());
      }
      return this.master;
    }

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      tries++;
      if (tries >= numRetries) {
        // we should delete connection between client and zookeeper
        HConnectionManager.deleteStaleConnection(this.connection);
        throw new MasterNotRunningException("Retried " + numRetries + " times");
      }


      try {
        Thread.sleep(getPauseTime(tries));
      } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
        // we should delete connection between client and zookeeper
        HConnectionManager.deleteStaleConnection(this.connection);
        throw new MasterNotRunningException(
          "Interrupted after "+tries+" tries");
      }
    }
  }

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org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation

org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$StubMaker

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