ltamasi

Add PutEntity support for optimistic and WritePrepared pessimistic transactions

10

Summary: The patch extends optimistic transactions and WriteCommitted pessimistic transactions with support for the `PutEntity` API. Similarly to the other APIs, `PutEntity` is available via both the `Transaction` and `TransactionDB`...

Add GetEntityForUpdate to optimistic and WriteCommitted pessimistic transactions

4

Summary: The patch adds a new `GetEntityForUpdate` API to optimistic and WriteCommitted pessimistic transactions, which provides transactional wide-column point lookup functionality with concurrency control. For WriteCommitted transactions, user-defined timestamps are...