diff --git a/cpp/unittest/scheduler/test_resource.cpp b/cpp/unittest/scheduler/test_resource.cpp
index 9d859d6243a2755943badfcff4832173dad09c31..1ff0d9fdc19b00e076fe9fa4cd590066ba6c16b9 100644
--- a/cpp/unittest/scheduler/test_resource.cpp
+++ b/cpp/unittest/scheduler/test_resource.cpp
@@ -184,7 +184,7 @@ class ResourceAdvanceTest : public testing::Test {
 };
 
 TEST_F(ResourceAdvanceTest, DISK_RESOURCE_TEST) {
-    const uint64_t NUM = 10;
+    const uint64_t NUM = max_once_load;
     std::vector<std::shared_ptr<TestTask>> tasks;
     TableFileSchemaPtr dummy = nullptr;
     for (uint64_t i = 0; i < NUM; ++i) {