xiaokang commented on code in PR #18033:
URL: https://github.com/apache/doris/pull/18033#discussion_r1144825856
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be/src/olap/lru_cache.h:
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@@ -314,13 +314,10 @@ class HandleTable {
void _resize();
};
-// pair first is timestatmp, put <timestatmp, LRUHandle*> into asc
priority_queue,
-// when need to free space, can first evict the top of the LRUHandleHeap,
-// because the top element's timestamp is the oldest.
-typedef std::priority_queue<std::pair<int64_t, LRUHandle*>,
- std::vector<std::pair<int64_t, LRUHandle*>>,
- std::greater<std::pair<int64_t, LRUHandle*>>>
- LRUHandleHeap;
+// pair first is timestatmp, put <timestatmp, LRUHandle*> into asc set,
+// when need to free space, can first evict the begin of the set,
+// because the begin element's timestamp is the oldest.
+typedef std::set<std::pair<int64_t, LRUHandle*>> LRUHandleAscSet;
Review Comment:
using LRUHandleSortedSet = std::set<std::pair<int64_t, LRUHandle*>>;
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