Package org.apache.hadoop.hive.ql.lib

Examples of org.apache.hadoop.hive.ql.lib.ForwardWalker.startWalking()

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    // rule and passes the context along
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, procCtx);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pCtx.getTopOps().values());
    GraphWalker ogw = new ForwardWalker(disp);
    ogw.startWalking(topNodes, null);
  }

  @Override
  protected void generateTaskTree(List<Task<? extends Serializable>> rootTasks, ParseContext pCtx,
      List<Task<MoveWork>> mvTask, Set<ReadEntity> inputs, Set<WriteEntity> outputs)
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    // rule and passes the context along
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, procCtx);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(procCtx.parseContext.getTopOps().values());
    GraphWalker ogw = new ForwardWalker(disp);
    ogw.startWalking(topNodes, null);
  }

  private void runDynamicPartitionPruning(OptimizeTezProcContext procCtx, Set<ReadEntity> inputs,
      Set<WriteEntity> outputs) throws SemanticException {
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    // rule and passes the context along
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, procCtx);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(procCtx.parseContext.getTopOps().values());
    GraphWalker ogw = new ForwardWalker(disp);
    ogw.startWalking(topNodes, null);

    // need a new run of the constant folding because we might have created lots
    // of "and true and true" conditions.
    if(procCtx.conf.getBoolVar(ConfVars.HIVEOPTCONSTANTPROPAGATION)) {
      new ConstantPropagate().transform(procCtx.parseContext);
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    // rule and passes the context along
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, procCtx);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pCtx.getTopOps().values());
    GraphWalker ogw = new ForwardWalker(disp);
    ogw.startWalking(topNodes, null);
  }

  @Override
  protected void generateTaskTree(List<Task<? extends Serializable>> rootTasks, ParseContext pCtx,
      List<Task<MoveWork>> mvTask, Set<ReadEntity> inputs, Set<WriteEntity> outputs)
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