Split the time zone database and time zone initialization.

src/daemons/MetaDaemon.cpp

@@ -300,6 +300,13 @@ int main(int argc, char *argv[]) {
         return EXIT_FAILURE;
     }
 
+    // load the time zone data
+    status = nebula::time::Timezone::init();
+    if (!status.ok()) {
+        LOG(ERROR) << status;
+        return EXIT_FAILURE;
+    }
+
     // Initialize the global timezone, it's only used for datetime type compute
     // won't affect the process timezone.
     status = nebula::time::Timezone::initializeGlobalTimezone();

src/daemons/StorageDaemon.cpp

@@ -115,6 +115,13 @@ int main(int argc, char *argv[]) {
         return EXIT_FAILURE;
     }
 
+    // load the time zone data
+    status = nebula::time::Timezone::init();
+    if (!status.ok()) {
+        LOG(ERROR) << status;
+        return EXIT_FAILURE;
+    }
+
     // Initialize the global timezone, it's only used for datetime type compute
     // won't affect the process timezone.
     status = nebula::time::Timezone::initializeGlobalTimezone();