Examples of org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager

Package org.apache.hadoop.hive.ql.lockmgr

Examples of org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager

org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager
An interface that allows Hive to manage transactions. All classes implementing this should extend {@link HiveTxnManagerImpl} rather thanimplementing this directly.

          isExtended = true;
        }
      }
    }


    HiveTxnManager txnManager = null;
    try {
      txnManager = TxnManagerFactory.getTxnManagerFactory().getTxnManager(conf);
    } catch (LockException e) {
      throw new SemanticException(e.getMessage());
    }


    ShowLocksDesc showLocksDesc = new ShowLocksDesc(ctx.getResFile(), tableName,
        partSpec, isExtended, txnManager.useNewShowLocksFormat());
    rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
        showLocksDesc), conf));
    setFetchTask(createFetchTask(showLocksDesc.getSchema()));


    // Need to initialize the lock manager

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   */
  private void analyzeShowDbLocks(ASTNode ast) throws SemanticException {
    boolean isExtended = (ast.getChildCount() > 1);
    String dbName = stripQuotes(ast.getChild(0).getText());


    HiveTxnManager txnManager = null;
    try {
      txnManager = TxnManagerFactory.getTxnManagerFactory().getTxnManager(conf);
    } catch (LockException e) {
      throw new SemanticException(e.getMessage());
    }


    ShowLocksDesc showLocksDesc = new ShowLocksDesc(ctx.getResFile(), dbName,
                                                    isExtended, txnManager.useNewShowLocksFormat());
    rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
        showLocksDesc), conf));
    setFetchTask(createFetchTask(showLocksDesc.getSchema()));


    // Need to initialize the lock manager

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int unlockTable(UnlockTableDesc unlockTbl) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("unlock Table LockManager not specified");
    }


    String tabName = unlockTbl.getTableName();

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int showLocks(ShowLocksDesc showLocks) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    HiveLockManager lockMgr = txnManager.getLockManager();


    if (txnManager.useNewShowLocksFormat()) return showLocksNewFormat(showLocks, lockMgr);


    boolean isExt = showLocks.isExt();
    if (lockMgr == null) {
      throw new HiveException("show Locks LockManager not specified");
    }

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int lockTable(LockTableDesc lockTbl) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("lock Table LockManager not specified");
    }


    HiveLockMode mode = HiveLockMode.valueOf(lockTbl.getMode());

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int lockDatabase(LockDatabaseDesc lockDb) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("lock Database LockManager not specified");
    }


    HiveLockMode mode = HiveLockMode.valueOf(lockDb.getMode());

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int unlockDatabase(UnlockDatabaseDesc unlockDb) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("unlock Database LockManager not specified");
    }


    String dbName = unlockDb.getDatabaseName();

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int showLocks(ShowLocksDesc showLocks) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    HiveLockManager lockMgr = txnManager.getLockManager();


    if (txnManager.useNewShowLocksFormat()) return showLocksNewFormat(showLocks, lockMgr);


    boolean isExt = showLocks.isExt();
    if (lockMgr == null) {
      throw new HiveException("show Locks LockManager not specified");
    }

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int lockTable(LockTableDesc lockTbl) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("lock Table LockManager not specified");
    }


    HiveLockMode mode = HiveLockMode.valueOf(lockTbl.getMode());

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   * @throws HiveException
   *           Throws this exception if an unexpected error occurs.
   */
  private int lockDatabase(LockDatabaseDesc lockDb) throws HiveException {
    Context ctx = driverContext.getCtx();
    HiveTxnManager txnManager = ctx.getHiveTxnManager();
    if (!txnManager.supportsExplicitLock()) {
      throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
          conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
    }
    HiveLockManager lockMgr = txnManager.getLockManager();
    if (lockMgr == null) {
      throw new HiveException("lock Database LockManager not specified");
    }


    HiveLockMode mode = HiveLockMode.valueOf(lockDb.getMode());

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Related Classes of org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager

org.apache.hadoop.hive.ql.Driver

org.apache.hadoop.hive.ql.exec.DDLTask

org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer

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