Data recovery for a compute node in a heterogeneous database system is provided. A failure is detected of a particular compute node of a compute cluster comprising a plurality of compute nodes. The compute cluster is configured to store, in memory, data stored by a RDBMS. Particular data of the data stored by the RDBMS is identified that is assigned to the particular compute node. The particular compute node is restored. After restoring the particular compute node, the particular data assigned to the particular compute node is reloaded without taking the particular data offline. During reloading, the particular compute node receives pending modified data comprising data of the particular data that was modified during said reloading.