wuyunfeng commented on a change in pull request #4172:
URL: https://github.com/apache/incubator-doris/pull/4172#discussion_r471326590
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File path: be/src/util/blocking_priority_queue.hpp
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@@ -85,34 +85,32 @@ class BlockingPriorityQueue {
MonotonicStopWatch timer;
boost::unique_lock<boost::mutex> unique_lock(_lock);
- while (true) {
- if (!_queue.empty()) {
- // 定期提高队列中残留的任务优先级
- // 保证优先级较低的大查询不至于完全饿死
- if (_upgrade_counter >
config::priority_queue_remaining_tasks_increased_frequency) {
- std::priority_queue<T> tmp_queue;
- while (!_queue.empty()) {
- T v = _queue.top();
- _queue.pop();
- ++v;
- tmp_queue.push(v);
- }
- swap(_queue, tmp_queue);
- _upgrade_counter = 0;
+ if (!_queue.empty()) {
+ // 定期提高队列中残留的任务优先级
Review comment:
Maybe you should write the comment using the English
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