Update cluster id (#5514)

vesoft-inc · Apr 19, 2023 · abc9f35 · abc9f35
1 parent a3d1bea
commit abc9f35
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/src/meta/KVBasedClusterIdMan.h b/src/meta/KVBasedClusterIdMan.h
@@ -29,8 +29,17 @@ class ClusterIdMan {
    * @return
    */
   static ClusterID create(const std::string& metaAddrs) {
+    // Generate random salt
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::string randomBytes(16, ' ');
+    std::generate_n(randomBytes.begin(), 16, std::ref(gen));
+
+    // Concatenate salt with input string
+    std::string saltedInput = metaAddrs + randomBytes;
+
     std::hash<std::string> hash_fn;
-    auto clusterId = hash_fn(metaAddrs);
+    auto clusterId = hash_fn(saltedInput);
     uint64_t mask = 0x7FFFFFFFFFFFFFFF;
     clusterId &= mask;
     LOG(INFO) << "Create ClusterId " << clusterId;