[ARTEMIS-3214] apply automatic page-in when all messages in a queue have expired

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 2.17.0
• Component/s: Broker
• Assignee: Unassigned
• Reporter: Erwin Dondorp
• Created: 30/Mar/21 23:03
• Updated: 31/Mar/21 16:12
• Resolved: 31/Mar/21 10:42

Description

When there are many messages in a queue, the messages are (by default) paged.
However, when all these messages expire (given that a TTL is set), and there are no consumers, only the in-memory messages are removed. This leaves all paged messages in their on-disk state, thus preventing further actual message expiry.

Is it possible to add a function where messages are paged-in more often? e.g. when the in-memory part of the queue is empty during an expiry-sweep. This is useful even when only one chunk is paged-in to not keep the expiry-thread unreasonably busy. This will eventually lead to the actual expiry.