enable nio connector

db/voldemort/config/server.properties

@@ -21,6 +21,6 @@ mysql.password=3306
 mysql.database=test
 
 #NIO connector settings.
-enable.nio.connector=false
+enable.nio.connector=true
 
 storage.configs=voldemort.store.bdb.BdbStorageConfiguration, voldemort.store.readonly.ReadOnlyStorageConfiguration