Program: 44134
Project: 44134
Buggy source:
private void configure(final Properties properties) throws IOException {
  final List<String> loggerNames=getStringCsvList(properties,"String_Node_Str","String_Node_Str");
  final Set<String> done=new HashSet<String>();
  for (  String loggerName : loggerNames) {
    if (!done.add(loggerName)) {
      continue;
    }
    final Logger logger=LogContext.getSystemLogContext().getLogger(loggerName);
    configuredLoggers.put(loggerName,logger);
    final String levelName=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (levelName != null) {
      logger.setLevel(LogContext.getSystemLogContext().getLevelForName(levelName));
    }
    final String filterName=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (filterName != null) {
      logger.setFilter(configureFilter(properties,filterName));
    }
    final List<String> handlerNames=getStringCsvList(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    for (    String handlerName : handlerNames) {
      logger.addHandler(configureHandler(properties,handlerName));
    }
    final String useParentHandlersString=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (useParentHandlersString != null) {
      logger.setUseParentHandlers(Boolean.parseBoolean(useParentHandlersString));
    }
  }
}

Fixed version (ground truth):
private void configure(final Properties properties) throws IOException {
  final List<String> loggerNames=getStringCsvList(properties,"String_Node_Str","String_Node_Str");
  final Set<String> done=new HashSet<String>();
  reportErrors=Boolean.parseBoolean(properties.getProperty("String_Node_Str","String_Node_Str"));
  for (  String loggerName : loggerNames) {
    if (!done.add(loggerName)) {
      continue;
    }
    final Logger logger=LogContext.getSystemLogContext().getLogger(loggerName);
    configuredLoggers.put(loggerName,logger);
    final String levelName=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (levelName != null) {
      try {
        logger.setLevel(LogContext.getSystemLogContext().getLevelForName(levelName));
      }
 catch (      IllegalArgumentException e) {
        System.err.printf("String_Node_Str",levelName,logger,e.getMessage());
      }
    }
    final String filterName=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (filterName != null) {
      try {
        logger.setFilter(configureFilter(properties,filterName));
      }
 catch (      IllegalArgumentException e) {
        System.err.printf("String_Node_Str",filterName,logger,e.getMessage());
      }
    }
    final List<String> handlerNames=getStringCsvList(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    for (    String handlerName : handlerNames) {
      try {
        logger.addHandler(configureHandler(properties,handlerName));
      }
 catch (      IllegalArgumentException e) {
        System.err.printf("String_Node_Str",handlerName,logger,e.getMessage());
      }
    }
    final String useParentHandlersString=getStringProperty(properties,getKey("String_Node_Str",loggerName,"String_Node_Str"));
    if (useParentHandlersString != null) {
      logger.setUseParentHandlers(Boolean.parseBoolean(useParentHandlersString));
    }
  }
}