Notes about inner transactions

Inner transactions are operations that occur within a single outer transaction. They represent either Web service requests or administrative operations that run within an outer transaction. A few considerations about inner transactions are useful to note:

• All non-updating inner transactions that specify the outer transaction ID are processed against the most recent internal version of the index available within the outer transaction.
• Inner transactions with updates are always serial —they are applied in the order they are received.
• Read-only inner transactions are processed in parallel.