Under the hood
New methods let a session hold and later release batches of delivery acknowledgements
What
Two new methods, holdProcessedAcks and releaseProcessedAcks, were added to a session/transport object. holdProcessedAcks starts buffering delivery acknowledgements instead of sending them immediately, and releaseProcessedAcks flushes any buffered acknowledgements out as 'processed' delivery reports.
Why
This allows delivery acknowledgements to be batched and released together rather than sent one at a time, which the finding does not further explain the purpose of.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What triggers holding versus releasing acks, and what problem the batching solves, is not stated.