[jira] [Commented] (LOG4NET-551) LockRecursionException when using File Appenders

["Danny Klausner (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4NET-551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15894674#comment-15894674 ] 

Danny Klausner commented on LOG4NET-551:
----------------------------------------

Hi, we recently updated to Log4net version 2.0.7 and also experiencing the "LockRecursionException". I see the above PR (https://issues.apache.org/jira/browse/LOG4NET-550) addresses it for .Net Framework 4.0, but does it also support 4.5? I confirmed the log4net version (2.0.7) we are using is against .Net 4.5 when we see the errors. Your feedback/help is much appreciated before we upgrade to 2.0.8! Thanks! :)

> LockRecursionException when using File Appenders
> ------------------------------------------------
>
>                 Key: LOG4NET-551
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-551
>             Project: Log4net
>          Issue Type: Bug
>    Affects Versions: 2.0.7
>            Reporter: Matthew Lefoster
>            Priority: Minor
>             Fix For: 2.0.8
>
>
> I have been getting the following exception on the console:
> {quote}
> 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 System.Threading.ReaderWriterLockSlim.EnterReadLock()
>    at log4net.Util.ReaderWriterLock.AcquireReaderLock()
>    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)
> {quote}
> 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):
> {quote}
> Logger.DebugFormat("[1] Executing SQL: [0][2][0]With parameters: [3]",
>                 Environment.NewLine, methodName, sql, new ToStringWrapper(parameters));
> {quote}
> 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.



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