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ConcurrentModificationException in getLogs()

See original GitHub issue

We tried LogCaptor in some integration-style tests, where logging actually happens in background thread. Occasionally getLogs() throws ConcurrentModificationException - quick look into code shows that ListAppender.list is not thread-safe, so it’s almost certainly a race between test and application threads. I think it’s not a problem for actual logging since AppenderBase::doAppend is synchronized, but it is a problem when scanning the list. One possible fix would be to wrap all access to list into synchronized(listAppender). Or, maybe even better, swap it for CopyOnWrite / Collections::synchronizedList. Any views on that? Happy to submit PR as well.

Issue Analytics

State:
Created 2 years ago
Comments:7 (7 by maintainers)

Top GitHub Comments

2reactions

AndreyNudkocommented, Nov 17, 2021

@Hakky54 Awesome, thanks for the quick turnaround!

1reaction

Hakky54commented, Nov 17, 2021

@AndreyNudko The latest changes are now available within version 2.7.2

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