Package org.apache.tajo.engine.planner.global

Examples of org.apache.tajo.engine.planner.global.ExecutionBlockCursor.nextBlock()

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      SubQueryCompletedEvent castEvent = (SubQueryCompletedEvent) event;
      ExecutionBlockCursor cursor = query.getExecutionBlockCursor();
      MasterPlan masterPlan = query.getPlan();
      // if the subquery is succeeded
      if (castEvent.getFinalState() == SubQueryState.SUCCEEDED) {
        ExecutionBlock nextBlock = cursor.nextBlock();
        if (!query.getPlan().isTerminal(nextBlock) || !query.getPlan().isRoot(nextBlock)) {
          SubQuery nextSubQuery = new SubQuery(query.context, query.getPlan(), nextBlock, query.sm);
          nextSubQuery.setPriority(query.priority--);
          query.addSubQuery(nextSubQuery);
          nextSubQuery.handle(new SubQueryEvent(nextSubQuery.getId(),
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    ExecutionBlockCursor cursor = new ExecutionBlockCursor(plan);

    int count = 0;
    while(cursor.hasNext()) {
      cursor.nextBlock();
      count++;
    }

    // 4 input relations, 1 broadcast join and 2 symmetric repartition joins and 1 terminal = 8 execution blocks
    assertEquals(8, count);
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      return !query.getPlan().isTerminal(nextBlock);
    }

    private void executeNextBlock(Query query) {
      ExecutionBlockCursor cursor = query.getExecutionBlockCursor();
      ExecutionBlock nextBlock = cursor.nextBlock();
      SubQuery nextSubQuery = new SubQuery(query.context, query.getPlan(), nextBlock, query.sm);
      nextSubQuery.setPriority(query.priority--);
      query.addSubQuery(nextSubQuery);
      nextSubQuery.handle(new SubQueryEvent(nextSubQuery.getId(), SubQueryEventType.SQ_INIT));
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    ExecutionBlockCursor cursor = new ExecutionBlockCursor(plan);

    int count = 0;
    while(cursor.hasNext()) {
      cursor.nextBlock();
      count++;
    }

    assertEquals(6, count);
  }
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