How to use

removeAppender

method

in

org.pentaho.di.core.logging.LogWriter

@Override public void close() throws IOException {
 // remove the file appender from kettle logging
 if ( appender != null ) {
  logWriter.removeAppender( appender );
  appender.close();
 }
 Logger pigLogger = Logger.getLogger( "org.apache.pig" );
 if ( pigLogger != null && pigToKettleAppender != null ) {
  pigLogger.removeAppender( pigToKettleAppender );
  pigToKettleAppender.close();
 }
}

LogWriter.getInstance().removeAppender( appender );
appender.close();

LogWriter.getInstance().removeAppender( appender );
appender.close();

LogWriter.getInstance().removeAppender( appender );
appender.close();