yiguolei commented on code in PR #28794:
URL: https://github.com/apache/doris/pull/28794#discussion_r1435411638
##########
be/src/olap/lru_cache.cpp:
##########
@@ -231,18 +231,29 @@ void LRUCache::_lru_append(LRUHandle* list, LRUHandle* e)
{
}
Cache::Handle* LRUCache::lookup(const CacheKey& key, uint32_t hash) {
- std::lock_guard l(_mutex);
- ++_lookup_count;
- LRUHandle* e = _table.lookup(key, hash);
- if (e != nullptr) {
- // we get it from _table, so in_cache must be true
- DCHECK(e->in_cache);
- if (e->refs == 1) {
- // only in LRU free list, remove it from list
- _lru_remove(e);
+ LRUHandle* e;
Review Comment:
add some comment here
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