[logback-dev] WriterAppender.subAppend behaviour in case of IOExceptions

[Syvalta]

Hi Ceki,

I added an initial patch to http://jira.qos.ch/browse/LBCORE-109. I would
appreciate any feedback.



Ceki Gulcu wrote:
> 
> Hello Syvalta,
> 
> This is related to issue LBCORE-109 [1]. It would be nice if a
> WriterAppender 
> and derivatives could recuperate from a temporary failure.
> 
> - Changes can be backward incompatible but within reason.
> 
> - Attempts to recuperate from a failure should be done with parsimony. You
> could 
> use a backoff mechanism: attempt if N seconds have elapses, in the
> subsequent 
> attempt wait for 4*N, and in the third, wait for at least 16*N to elapse,
> and so 
> forth until you reach 30 minutes as a maximum delay between attempts.
> 
> - Do not do any buffering. If you do, you are likely to cause the
> applicaion to 
> crash with OutOfMemoryException if there is no limit to the size of the
> buffer 
> and it the buffer has a limit, then you can't guarantee that events won't
> be 
> lost. It's way too much hassle for little benefit.
> 
> - The patch would likely be accepted if it is easy to understand, if it
> has test 
> cases and all existing test cases continue to pass.
> 
> HTH,
> 
> [1] http://jira.qos.ch/browse/LBCORE-109
> 

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