[infinispan-dev] PutForExternalRead and autoCommit

Hi, Forcing caches to be either transactional or non transactional caches causes some issues with operations such as putForExternalRead with default configuration options. Assuming we have a transactional cache, if autoCommit is on (default), putForExternalRead will: 1. Suspend the ongoing transaction 2. Will create a brand new transaction due to implicit transaction creation logic in auto commit. This is not good. I don't think we can just disable autoCommit globally if someone calls putForExternalRead because there might other operations not called within a transaction, but there's a point to be made here: The whole point of calling PFER is to suspend on-going transactions, so it kinda implies that transactions are managed externally already. If we don't disable autoCommit globally, there's a few things that we should consider doing: 1. Print a WARN if PFER is called and autoCommit is on? 2. Apart from the message, some kind of way for putForExternalRead to instruct the implicit transaction logic to avoid creating a new transaction in this case. WDYT? -- Galder Zamarreño Sr. Software Engineer Infinispan, JBoss Cache