[FLINK-24515] MailboxExecutor#submit swallows exceptions

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.14.0, 1.12.5, 1.13.2
• Component/s: Runtime / Task
• Labels: pull-request-available
• Assignee: Dawid Wysakowicz
• Reporter: Dawid Wysakowicz
• Created: 12/Oct/21 13:38
• Updated: 13/Oct/21 18:27
• Resolved: 12/Oct/21 15:49

Description

If a RunnableWithException/Callable is submitted via the MailboxExecutor#submit any exceptions thrown from it will be swallowed.

It is caused by the FutureTaskWithException implementation. The FutureTask#run does not throw an exception, but it sets it as its internal state. The exception will be thrown only when FutureTask#get() is called.

Issue Links

• links to: GitHub Pull Request #17460