yixiutt commented on code in PR #19686:
URL: https://github.com/apache/doris/pull/19686#discussion_r1195869279


##########
be/src/olap/page_cache.cpp:
##########
@@ -51,6 +52,10 @@ StoragePageCache::StoragePageCache(size_t capacity, int32_t 
index_cache_percenta
     } else {
         CHECK(false) << "invalid index page cache percentage";
     }
+    if (pk_index_cache_capacity > 0) {
+        _pk_index_page_cache = std::unique_ptr<Cache>(new_lru_cache(

Review Comment:
   We want pk index page to be seperated from storage page cache cause storage 
page cache may not enable by default, but pk index cache may always be enabled.



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