Skysheepwang commented on a change in pull request #5008:
URL: https://github.com/apache/incubator-doris/pull/5008#discussion_r538947011
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File path: be/src/olap/page_cache.cpp
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@@ -21,35 +21,81 @@ namespace doris {
StoragePageCache* StoragePageCache::_s_instance = nullptr;
-void StoragePageCache::create_global_cache(size_t capacity) {
+void StoragePageCache::create_global_cache(size_t capacity, double
index_cache_ratio) {
DCHECK(_s_instance == nullptr);
- static StoragePageCache instance(capacity);
+ static StoragePageCache instance(capacity, index_cache_ratio);
_s_instance = &instance;
}
-StoragePageCache::StoragePageCache(size_t capacity)
- : _cache(new_lru_cache("StoragePageCache", capacity)) {}
+StoragePageCache::StoragePageCache(size_t capacity, double index_cache_ratio)
+ : _index_cache_ratio(index_cache_ratio) {
+ if (index_cache_ratio == 0) {
Review comment:
I think it is a good idea to use the percentage as index cache ratio
because of the safety problem as you mentioned and could also avoid using the
type cast. I will change the definition. Thank you very much!
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