Deadlock between FileHandler and ConsoleHandler when using customized formatter

Alan Bateman Alan.Bateman at
Fri Nov 29 15:56:09 UTC 2013

On 29/11/2013 10:08, Daniel Fuchs wrote:
> However, removing or just moving the lock around might well introduce new
> unknown issues - so it will need to be carefully anaIyzed, and I am 
> not sure
> it can/should be attempted in a minor JDK release.
Yes, we have to be very careful as the logging code has a history of 
biting the hand of those that try to improve it. For various reasons, it 
seems there is a lot of code that has subtle dependencies on the 
implementation, on the initialization in particular. In any case, you 
are to be applauded for tackling the synchronization issues and it would 
be a good project to re-examine all of this in JDK 9 to see how it would 
be simplified.

On documenting the locking details in an @implNote (which seems to be 
one of the suggestions here) then we also need to be careful as I think 
we need some flexibility to change some of this going forward.


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