morningman commented on a change in pull request #4688:
URL: https://github.com/apache/incubator-doris/pull/4688#discussion_r508949115
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File path: be/src/olap/lru_cache.cpp
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@@ -420,8 +425,7 @@ Slice ShardedLRUCache::value_slice(Handle* handle) {
}
uint64_t ShardedLRUCache::new_id() {
- MutexLock l(&_id_mutex);
- return ++(_last_id);
+ return _last_id.fetch_add(1, std::memory_order_relaxed);;
Review comment:
```suggestion
return _last_id.fetch_add(1, std::memory_order_relaxed);
```
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