[JAMES-4019] ReactiveThrottler: possible starvation

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.8.0, 3.8.1
• Fix Version/s: 3.9.0
• Assignee: Unassigned
• Reporter: Benoit Tellier
• Created: 11/Mar/24 11:38
• Updated: 12/Mar/24 05:57

Description

In production I encountered logs saying there was too much concurrent IMAP request.

From a starting point in time, my IMAP server stopped accepting request and could not continue progress. Complete dead lock.

By careful unit testing of ReactiveThrottler I was able to diagnose it was not handling "cancel" correctly and not propagating to items in the queue which would cause the deadlock.

Note: one can avoid this fully by disabling IMAP throttling.

Issue Links

• links to: GitHub Pull Request #2104