I have been getting the following exception on the console:
log4net:ERROR Exception while logging
System.Threading.LockRecursionException: Recursive read lock acquisitions not allowed in this mode.
at System.Threading.ReaderWriterLockSlim.TryEnterReadLockCore(TimeoutTracker timeout)
at System.Threading.ReaderWriterLockSlim.TryEnterReadLock(TimeoutTracker timeout)
at log4net.Repository.Hierarchy.Logger.CallAppenders(LoggingEvent loggingEvent)
at log4net.Repository.Hierarchy.Logger.ForcedLog(Type callerStackBoundaryDeclaringType, Level level, Object message, Exception exception)
at log4net.Repository.Hierarchy.Logger.Log(Type callerStackBoundaryDeclaringType, Level level, Object message, Exception exception)
I have a number of different appenders, but this only happens when I am using `log4net.Appender.FileAppender`.
Using a debugger, I was able to narrow it down to this line (I replaced curly brackets with square brackets because otherwise JIRA interprets them as macros):
Logger.DebugFormat(" Executing SQL: With parameters: ",
Environment.NewLine, methodName, sql, new ToStringWrapper(parameters));
My first thought was that ToStringWrapper() was throwing an exception or generating another logging call. But If I put breakpoints at the log call and at the first line of ToStringWrapper.ToString, the exception will show up in the console between those two points.
Oddly enough, if I "step into" the logging call instead of just "continuing" and letting the breakpoints handle it, no exception happens.