morningman commented on a change in pull request #3405:
URL: https://github.com/apache/incubator-doris/pull/3405#discussion_r415874642
##########
File path: be/src/exec/exec_node.cpp
##########
@@ -339,7 +337,7 @@ Status ExecNode::create_tree_helper(
}
if (!node->_children.empty()) {
-
node->runtime_profile()->add_child(node->_children[0]->runtime_profile(),
false, NULL);
Review comment:
It seem that the `false` here is to distinguish child[0] and other
children.
Are you sure this is more readable? You can put the result screenshots here
to explain.
##########
File path: be/src/exec/olap_scan_node.cpp
##########
@@ -702,8 +694,13 @@ Status OlapScanNode::start_scan_thread(RuntimeState*
state) {
state, this, _olap_scan_node.is_preaggregation,
_need_agg_finalize, *scan_range, scanner_ranges);
_scanner_pool->add(scanner);
_olap_scanners.push_back(scanner);
+
+ if (disk_set.find(scanner->scan_disk()) == disk_set.end()) {
+ disk_set.insert(scanner->scan_disk());
Review comment:
`disk_set` is a set, so no need to `find and insert`, just `insert` is
OK.
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