Package org.apache.hadoop.hive.ql.exec

Examples of org.apache.hadoop.hive.ql.exec.FilterOperator

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  static class FilterDedup implements NodeProcessor {
    @Override
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx,
        Object... nodeOutputs) throws SemanticException {
      FilterOperator cFIL = (FilterOperator) nd;
      FilterOperator pFIL = (FilterOperator) stack.get(stack.size() - 2);

      // Sampling predicates can be merged with predicates from children because PPD/PPR is
      // already applied. But to clarify the intention of sampling, just skips merging.
      if (pFIL.getConf().getIsSamplingPred()) {
        return null;
      }

      List<ExprNodeDesc> splits = new ArrayList<ExprNodeDesc>();
      ExprNodeDescUtils.split(cFIL.getConf().getPredicate(), splits);
      ExprNodeDescUtils.split(pFIL.getConf().getPredicate(), splits);

      pFIL.getConf().setPredicate(ExprNodeDescUtils.mergePredicates(splits));

      // if any of filter is sorted filter, it's sorted filter
      boolean sortedFilter = pFIL.getConf().isSortedFilter() || cFIL.getConf().isSortedFilter();
      pFIL.getConf().setSortedFilter(sortedFilter);

      pFIL.removeChildAndAdoptItsChildren(cFIL);
      cFIL.setParentOperators(null);
      cFIL.setChildOperators(null);
      cFIL = null;

      return null;
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  public static class FilterPPR implements NodeProcessor {

    @Override
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx,
        Object... nodeOutputs) throws SemanticException {
      FilterOperator filOp = (FilterOperator) nd;
      FilterDesc filOpDesc = filOp.getConf();
      sampleDesc sampleDescr = filOpDesc.getSampleDescr();

      if ((sampleDescr == null) || !sampleDescr.getInputPruning()) {
        return null;
      }
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    @Override
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx,
        Object... nodeOutputs) throws SemanticException {
      PcrOpWalkerCtx owc = (PcrOpWalkerCtx) procCtx;
      FilterOperator fop = (FilterOperator) nd;
      FilterOperator fop2 = null;

      // The stack contains either ... TS, Filter or
      // ... TS, Filter, Filter with the head of the stack being the rightmost
      // symbol. So we just pop out the two elements from the top and if the
      // second one of them is not a table scan then the operator on the top of
      // the stack is the Table scan operator.
      Node tmp = stack.pop();
      Node tmp2 = stack.pop();
      TableScanOperator top = null;
      Operator<? extends OperatorDesc> pop = null;
      if (tmp2 instanceof TableScanOperator) {
        top = (TableScanOperator) tmp2;
        pop = top;
      } else {
        top = (TableScanOperator) stack.peek();
        fop2 = (FilterOperator) tmp2;
        pop = fop2;
      }
      stack.push(tmp2);
      stack.push(tmp);

      // If fop2 exists (i.e this is not the top level filter and fop2 is not
      // a sampling filter then we ignore the current filter
      if (fop2 != null && !fop2.getConf().getIsSamplingPred()) {
        return null;
      }

      // ignore the predicate in case it is not a sampling predicate
      if (fop.getConf().getIsSamplingPred()) {
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   * Check for conditions in FilterOperator that do not meet rewrite criteria.
   */
  private static class CheckFilterProc implements NodeProcessor {
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx ctx,
        Object... nodeOutputs) throws SemanticException {
      FilterOperator operator = (FilterOperator)nd;
      canApplyCtx = (RewriteCanApplyCtx)ctx;
      FilterDesc conf = (FilterDesc)operator.getConf();
      //The filter operator should have a predicate of ExprNodeGenericFuncDesc type.
      //This represents the comparison operator
      ExprNodeGenericFuncDesc oldengfd = (ExprNodeGenericFuncDesc) conf.getPredicate();
      if(oldengfd == null){
        canApplyCtx.setWhrClauseColsFetchException(true);
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   * Node Processor for Column Pruning on Filter Operators.
   */
  public static class ColumnPrunerFilterProc implements NodeProcessor {
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx ctx,
        Object... nodeOutputs) throws SemanticException {
      FilterOperator op = (FilterOperator) nd;
      ColumnPrunerProcCtx cppCtx = (ColumnPrunerProcCtx) ctx;
      ExprNodeDesc condn = op.getConf().getPredicate();
      // get list of columns used in the filter
      List<String> cl = condn.getCols();
      // merge it with the downstream col list
      List<String> filterOpPrunedColLists = Utilities.mergeUniqElems(cppCtx.genColLists(op), cl);
      List<String> filterOpPrunedColListsOrderPreserved = preserveColumnOrder(op,
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   * Node Processor for Column Pruning on Filter Operators.
   */
  public static class ColumnPrunerFilterProc implements NodeProcessor {
    public Object process(Node nd, Stack<Node> stack, NodeProcessorCtx ctx,
        Object... nodeOutputs) throws SemanticException {
      FilterOperator op = (FilterOperator) nd;
      ColumnPrunerProcCtx cppCtx = (ColumnPrunerProcCtx) ctx;
      ExprNodeDesc condn = op.getConf().getPredicate();
      // get list of columns used in the filter
      List<String> cl = condn.getCols();
      // merge it with the downstream col list
      cppCtx.getPrunedColLists().put(op,
          Utilities.mergeUniqElems(cppCtx.genColLists(op), cl));
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Related Classes of org.apache.hadoop.hive.ql.exec.FilterOperator

  • org.apache.hadoop.hive.ql.optimizer.ColumnPrunerProcFactory$ColumnPrunerFilterProc
  • org.apache.hadoop.hive.ql.optimizer.ConstantPropagateProcFactory$ConstantPropagateFilterProc
  • org.apache.hadoop.hive.ql.optimizer.DynamicPartitionPruningOptimization
  • org.apache.hadoop.hive.ql.optimizer.index.RewriteCanApplyProcFactory$CheckFilterProc
  • org.apache.hadoop.hive.ql.optimizer.NonBlockingOpDeDupProc$FilterDedup
  • org.apache.hadoop.hive.ql.optimizer.pcr.PcrOpProcFactory$FilterPCR
  • org.apache.hadoop.hive.ql.optimizer.physical.NullScanOptimizer$WhereFalseProcessor
  • org.apache.hadoop.hive.ql.optimizer.ppr.OpProcFactory$FilterPPR
  • org.apache.hadoop.hive.ql.optimizer.PrunerOperatorFactory$FilterPruner
  • org.apache.hadoop.hive.ql.optimizer.SamplePruner$FilterPPR
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