Method addSubNode

src/system/executor.cc:279–290

}

void Executor::NodeInfo::addSubNode(RNode* s) {
  CHECK_NOTNULL(s);
  // insert s into sub_nodes such as sub_nodes is still ordered
  int pos = 0;
  while (pos < sub_nodes.size() &&
         CHECK_NOTNULL(sub_nodes[pos])->keyRange().inLeft(s->keyRange())) {
    ++ pos;
  }
  sub_nodes.insert(sub_nodes.begin()+pos, s);
  // update the key range
  key_ranges.insert(key_ranges.begin() + pos, s->keyRange());
}

void Executor::NodeInfo::removeSubNode(RNode* s) {
  size_t n = sub_nodes.size();