From 82a5496f28569a46e468587a76e4686d324e5847 Mon Sep 17 00:00:00 2001
From: Alexander Tokmakov <tavplubix@clickhouse.com>
Date: Thu, 13 Jun 2024 15:28:04 +0200
Subject: [PATCH] fix

---
 src/Core/ServerUUID.cpp                    | 5 +++++
 src/Core/ServerUUID.h                      | 2 ++
 src/Interpreters/tests/gtest_filecache.cpp | 7 +++++++
 3 files changed, 14 insertions(+)

diff --git a/src/Core/ServerUUID.cpp b/src/Core/ServerUUID.cpp
index 9dfaf4fecf2..251b407e673 100644
--- a/src/Core/ServerUUID.cpp
+++ b/src/Core/ServerUUID.cpp
@@ -68,4 +68,9 @@ UUID loadServerUUID(const fs::path & server_uuid_file, Poco::Logger * log)
     }
 }
 
+void ServerUUID::setRandomForUnitTests()
+{
+    server_uuid = UUIDHelpers::generateV4();
+}
+
 }
diff --git a/src/Core/ServerUUID.h b/src/Core/ServerUUID.h
index 9b9963ceeeb..9c7f7d32acc 100644
--- a/src/Core/ServerUUID.h
+++ b/src/Core/ServerUUID.h
@@ -19,6 +19,8 @@ public:
 
     /// Loads server UUID from file or creates new one. Should be called on daemon startup.
     static void load(const fs::path & server_uuid_file, Poco::Logger * log);
+
+    static void setRandomForUnitTests();
 };
 
 UUID loadServerUUID(const fs::path & server_uuid_file, Poco::Logger * log);
diff --git a/src/Interpreters/tests/gtest_filecache.cpp b/src/Interpreters/tests/gtest_filecache.cpp
index 41191ba1605..36acc319f4e 100644
--- a/src/Interpreters/tests/gtest_filecache.cpp
+++ b/src/Interpreters/tests/gtest_filecache.cpp
@@ -8,6 +8,7 @@
 #include <numeric>
 #include <thread>
 
+#include <Core/ServerUUID.h>
 #include <Common/iota.h>
 #include <Common/randomSeed.h>
 #include <DataTypes/DataTypesNumber.h>
@@ -333,6 +334,7 @@ public:
 
 TEST_F(FileCacheTest, LRUPolicy)
 {
+    ServerUUID::setRandomForUnitTests();
     DB::ThreadStatus thread_status;
 
     /// To work with cache need query_id and query context.
@@ -807,6 +809,7 @@ TEST_F(FileCacheTest, LRUPolicy)
 
 TEST_F(FileCacheTest, writeBuffer)
 {
+    ServerUUID::setRandomForUnitTests();
     FileCacheSettings settings;
     settings.max_size = 100;
     settings.max_elements = 5;
@@ -938,6 +941,7 @@ static size_t readAllTemporaryData(TemporaryFileStream & stream)
 
 TEST_F(FileCacheTest, temporaryData)
 {
+    ServerUUID::setRandomForUnitTests();
     DB::FileCacheSettings settings;
     settings.max_size = 10_KiB;
     settings.max_file_segment_size = 1_KiB;
@@ -1044,6 +1048,7 @@ TEST_F(FileCacheTest, temporaryData)
 
 TEST_F(FileCacheTest, CachedReadBuffer)
 {
+    ServerUUID::setRandomForUnitTests();
     DB::ThreadStatus thread_status;
 
     /// To work with cache need query_id and query context.
@@ -1120,6 +1125,7 @@ TEST_F(FileCacheTest, CachedReadBuffer)
 
 TEST_F(FileCacheTest, TemporaryDataReadBufferSize)
 {
+    ServerUUID::setRandomForUnitTests();
     /// Temporary data stored in cache
     {
         DB::FileCacheSettings settings;
@@ -1167,6 +1173,7 @@ TEST_F(FileCacheTest, TemporaryDataReadBufferSize)
 
 TEST_F(FileCacheTest, SLRUPolicy)
 {
+    ServerUUID::setRandomForUnitTests();
     DB::ThreadStatus thread_status;
     std::string query_id = "query_id"; /// To work with cache need query_id and query context.