Program: 112946
Project: 112946
Buggy source:
public static StoreFactoryFamilySpi findStoreFamily(final Map<String,String> configOptions){
  final Object storeHint=configOptions.get(STORE_HINT_KEY);
  final Map<String,StoreFactoryFamilySpi> internalStoreFamilies=getRegisteredStoreFactoryFamilies();
  if (storeHint != null) {
    final StoreFactoryFamilySpi factory=internalStoreFamilies.get(storeHint.toString());
    if (factory != null) {
      final List<String> missingOptions=getMissingRequiredOptions(factory,configOptions);
      if (missingOptions.isEmpty()) {
        return factory;
      }
      LOGGER.error("String_Node_Str" + storeHint.toString() + "String_Node_Str"+ ConfigUtils.getOptions(missingOptions));
      return null;
    }
 else {
      LOGGER.error("String_Node_Str" + storeHint.toString() + "String_Node_Str");
      return null;
    }
  }
  for (  final Entry<String,StoreFactoryFamilySpi> entry : internalStoreFamilies.entrySet()) {
    if (exactMatch(entry.getValue(),configOptions)) {
      return entry.getValue();
    }
  }
  int matchingFactoryRequiredOptionsCount=-1;
  StoreFactoryFamilySpi matchingFactory=null;
  boolean matchingFactoriesHaveSameRequiredOptionsCount=false;
  LOGGER.debug("String_Node_Str" + internalStoreFamilies.size());
  for (  final Entry<String,StoreFactoryFamilySpi> entry : internalStoreFamilies.entrySet()) {
    final StoreFactoryFamilySpi factory=entry.getValue();
    final List<String> missingOptions=getMissingRequiredOptions(factory,configOptions);
    final List<String> matchingOptions=getMatchingRequiredOptions(factory,configOptions);
    final ConfigOption[] factoryOptions=ConfigUtils.createConfigOptionsFromJCommander(factory.getDataStoreFactory().createOptionsInstance());
    LOGGER.debug("String_Node_Str" + factoryOptions.length + "String_Node_Str"+ factory.getType());
    if (missingOptions.isEmpty() && ((matchingFactory == null) || (matchingOptions.size() >= matchingFactoryRequiredOptionsCount))) {
      matchingFactory=factory;
      matchingFactoriesHaveSameRequiredOptionsCount=(matchingOptions.size() == matchingFactoryRequiredOptionsCount);
      matchingFactoryRequiredOptionsCount=matchingOptions.size();
    }
  }
  if (matchingFactory == null) {
    LOGGER.error("String_Node_Str");
  }
 else   if (matchingFactoriesHaveSameRequiredOptionsCount) {
    LOGGER.warn("String_Node_Str");
    LOGGER.warn(matchingFactory.getType() + "String_Node_Str");
  }
  return matchingFactory;
}

Fixed version (ground truth):
public static StoreFactoryFamilySpi findStoreFamily(final Map<String,String> configOptions){
  final Object storeHint=configOptions.get(STORE_HINT_KEY);
  final Map<String,StoreFactoryFamilySpi> internalStoreFamilies=getRegisteredStoreFactoryFamilies();
  if (storeHint != null) {
    final StoreFactoryFamilySpi factory=internalStoreFamilies.get(storeHint.toString());
    if (factory != null) {
      final List<String> missingOptions=getMissingRequiredOptions(factory,configOptions);
      if (missingOptions.isEmpty()) {
        return factory;
      }
      LOGGER.error("String_Node_Str" + storeHint.toString() + "String_Node_Str"+ ConfigUtils.getOptions(missingOptions));
      return null;
    }
 else {
      LOGGER.error("String_Node_Str" + storeHint.toString() + "String_Node_Str");
      return null;
    }
  }
  for (  final Entry<String,StoreFactoryFamilySpi> entry : internalStoreFamilies.entrySet()) {
    if (exactMatch(entry.getValue(),configOptions)) {
      return entry.getValue();
    }
  }
  int matchingFactoryRequiredOptionsCount=-1;
  StoreFactoryFamilySpi matchingFactory=null;
  boolean matchingFactoriesHaveSameRequiredOptionsCount=false;
  LOGGER.debug("String_Node_Str" + internalStoreFamilies.size());
  for (  final Entry<String,StoreFactoryFamilySpi> entry : internalStoreFamilies.entrySet()) {
    final StoreFactoryFamilySpi factory=entry.getValue();
    final List<String> missingOptions=getMissingRequiredOptions(factory,configOptions);
    final List<String> matchingOptions=getMatchingRequiredOptions(factory,configOptions);
    if (missingOptions.isEmpty() && ((matchingFactory == null) || (matchingOptions.size() >= matchingFactoryRequiredOptionsCount))) {
      matchingFactory=factory;
      matchingFactoriesHaveSameRequiredOptionsCount=(matchingOptions.size() == matchingFactoryRequiredOptionsCount);
      matchingFactoryRequiredOptionsCount=matchingOptions.size();
    }
  }
  if (matchingFactory == null) {
    LOGGER.error("String_Node_Str");
  }
 else   if (matchingFactoriesHaveSameRequiredOptionsCount) {
    LOGGER.warn("String_Node_Str");
    LOGGER.warn(matchingFactory.getType() + "String_Node_Str");
  }
  return matchingFactory;
}