Actually you can't, because the schema stored in cache configuration is the old one before adding column.
I've asked a similar question on dev list. http://apache-ignite-developers.2346864.n4.nabble.com/Schema-in-CacheConfig-is-not-updated-after-DDL-commands-Add-drop-column-Create-drop-index-td38002.html -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/