[logback-dev] [Bug 99] logback 0.9.8 keeps dropping and recreating connections

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.qos.ch/show_bug.cgi?id=99





------- Comment #2 from joern at huxhorn.de  2007-09-26 12:30 -------
Hi Ceki.

I'm really confused myself because I already compared 0.9.7 vs 0.9.8 and
couldn't find any changes that look critical. 

My only guess (and it's just that - a guess) is that there may be a problem in
LogbackMDCAdapter or StaticMDCBinder because those files are actually new.
There's also a change in LoggingEvent concerning MDC so this could really
(somehow) be the reason.

The whole problem does not manifest if I'm only using logback for logging (like
in my test-application for my viewer) without any third-party jars that use
log4j and/or commons-logging so it's probably a problem connected to static
logger instances in those third-party jars.

The Log-Event-Receiver is my own application which you can download at
http://lumberjack.huxhorn.de/lumberjack0914.zip (it's not yet released "in the
wild" but I welcome any comments). My viewer is using 0.9.8 in both cases, i.e.
it's working with 0.9.7 in the application sending the logging events and does
not work (drops and recreates connections while losing events) with 0.9.8.

I double and triple-checked this... it's *really* reproducible by just changing
the logback-dependencies from 0.9.7 to 0.9.8 in the application that's sending
the log-events.

The problem manifests in both our web-application and our console application
so I can at least say that it's not a web-container-related problem. Both apps
use spring-framework during startup which in turn uses commons-logging. We are
also  depending on spring-modules-cache-0.7 which depends on log4j.

I'm sorry about this rather obscure problem and will try to isolate it
further...


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