title: overwriting to same log file when using RollingFileAppender in log4j
body: <p>I'm having problem with log4j. when the log crosses the limit of the file size it's rewriting the existing log instead of creating new one. what can i do to create a new log file after reaching the file size.</p>
  
  <pre><code>log4j.appender.Default=org.apache.log4j.RollingFileAppender
  log4j.appender.Default.Threshold=INFO
  log4j.appender.Default.File=debug.log
  log4j.appender.Default.FilePattern=debug.%i.log
  log4j.appender.Default.layout=org.apache.log4j.PatternLayout
  log4j.appender.Default.layout.ConversionPattern=[%d,%c{1}]%m%n
  log4j.appender.Default.MaxFileSize=100KB
  log4j.appender.Default.MaxBackupIndex=10
  log4j.appender.Default.Append=true
  </code></pre>