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From "bong@ucdavis.edu" <b...@ucdavis.edu>
Subject outputting header twice for RollingFileAppender
Date Tue, 10 Nov 2009 20:53:06 GMT

Hi.  I have a RollingFileAppender where I’ve created a custom layout.  And,
in the custom layout, all I’m doing is adding a header row to my log file
(see below).

public class NoMatchingTranscriptPatternLayout extends PatternLayout {

      public NoMatchingTranscriptPatternLayout() {
      public String getHeader() {
            return (new String("Date of Download\tPdf\n"));

Now, I have a job that’s scheduled to run on a daily basis so the log files
get updated daily.  However, when the log file gets updated, the header gets
outputted to the log file each time the job is run.  I have log4j version
1.2.15.  Is this a bug?  Shouldn’t the header only get generated if the file
is new?  Please advise.  


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