Abstract: A method and apparatus for performing search system upgrades is described. The method may include processing a software upgrade for a search system cluster distributed over one or more nodes, the one or more nodes comprising current search system data nodes. The method may also include allocating at least a set of one or more search system data nodes for the software upgrade including at least one upgraded search system data node. Furthermore, the method can include receiving, during the software upgrade, transaction data for a transaction, and receiving search requests to be executed by the search system cluster.

Abstract: A method and apparatus for verifying integrity of search system data is described. The method may include accessing a first and second snapshot of search system data, the search system data in each snapshot including transaction data generated by a commerce platform system in response to transactions performed by the commerce platform system. The method may also include accessing an operation log of operations performed on the transaction data during a time between when the first snapshot was generated and a time when the second snapshot was generated. Furthermore, the method may include transforming the transaction data from the first snapshot based on the operations in the operation log to generate validated transaction data in a validated second snapshot, and determining a reliability of the transaction data at the second time period based on a comparison of transaction data from the second snapshot with the validated transaction data from the validated second snapshot.

Abstract: A method and apparatus for performing search system upgrades is described. The method may include processing a software upgrade for a search system cluster distributed over one or more nodes, the one or more nodes comprising current search system data nodes. The method may also include allocating at least a set of one or more search system data nodes for the software upgrade including at least one upgraded search system data node. Furthermore, the method can include receiving, during the software upgrade, transaction data for a transaction, and receiving search requests to be executed by the search system cluster.