uses the executed position ... that is based on the relay log,

if no wrapper using_master? returns false as selects go to the slaves

lib/master_slave_adapter/adapter.rb

@@ -165,7 +165,8 @@ def using_master?
           if Thread.current[:master_slave_select_connection]
             Thread.current[:master_slave_select_connection][0] == :master
           else
-            nil
+            # there is no wrapper so selects go to slave by default
+            false
           end
         end
 
@@ -237,7 +238,7 @@ def master_clock
 
       def slave_clock
         if status = connect_to_slave.select_one("SHOW SLAVE STATUS")
-          Clock.new(status['Master_Log_File'], status['Exec_Master_Log_Pos'])
+          Clock.new(status['Relay_Master_Log_File'], status['Exec_Master_Log_Pos'])
         end
       end
 

lib/master_slave_adapter/version.rb

@@ -1,3 +1,3 @@
 module MasterSlaveAdapter
-  VERSION = "0.0.1"
+  VERSION = "0.0.2"
 end