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Posted to log4j-dev@logging.apache.org by bu...@apache.org on 2006/07/18 15:46:50 UTC

DO NOT REPLY [Bug 17887] - RollingFileAppender does not work for 10 threads

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http://issues.apache.org/bugzilla/show_bug.cgi?id=17887


yves.debilloez@kbc.be changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |




------- Additional Comments From yves.debilloez@kbc.be  2006-07-18 13:46 -------
I also have this problem but are unable to generate a test scenario.  It occurs
only under heavy load after a few hours of running.

Could problem be related to the code in subAppend method?  It seems to be
related to the null-pointer exceptions issues in the subAppend method.

If one thread rolls over, the fileName might temporarily be reset to null.  A
second thread will write using a null filename.

I added a test in subAppend before calling the super method.  It resolves my
case but it is not a full solution because there is still some theoretical problem.

  protected
  void subAppend(LoggingEvent event) {
    if(fileName != null) 
      super.subAppend(event);
    if((fileName != null) &&
                     ((CountingQuietWriter) qw).getCount() >= maxFileSize)
      this.rollOver();
   }

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