Motivation

With ExtReplaceBodyWithXattr we can now avoid storing the staged content inside staged_mutation. We still always include the entire transaction_get_result inside a staged_mutation, which is not needed, as we only use a subset of the fields from the transaction_get_result. Storing those fields directly (similar to Go or Java), will allow us to further reduce the memory used for staged mutations.

Changes

• Remove the transaction_get_result from staged_mutation
• Add the individual fields, which were previously part of transaction_get_result that we need directly into the staged_mutation