Upgrade to GemFire XD from a previous version of the product, or from SQLFire version
1.1.1 or 1.1.2.
Note: Although GemFire XD supports upgrades from SQLFire version 1.1.1 and 1.1.2, mixed-version
clusters (having both GemFire XD and SQLFire members) are not supported. You must
shut down all SQLFire cluster members before upgrading them to GemFire XD.