Program: 37521
Project: 37521
Buggy source:
public void load(Map<String,KafkaCfg> kafkaMap){
  Map<Integer,List<KafkaCfg>> topics=groupBy(kafkaMap);
  for (  Entry<Integer,List<KafkaCfg>> entry : topics.entrySet()) {
    int poolId=entry.getKey();
    PoolCfg poolCfg=RedisEngineCtx.INSTANCE().getPoolCfgMap().get(poolId);
    StringBuffer servers=new StringBuffer();
    List<String> nodes=poolCfg.getNodes();
    for (int i=0; i < nodes.size(); i++) {
      String str=nodes.get(i);
      String[] node=str.split("String_Node_Str");
      servers.append(node[0]).append("String_Node_Str").append(node[1]);
      if (i < nodes.size() - 1) {
        servers.append("String_Node_Str");
      }
    }
    KafkaAdmin kafkaAdmin=new KafkaAdmin(servers.toString());
    Map<String,TopicDescription> existsTopics=kafkaAdmin.getTopicAndDescriptions();
    List<KafkaCfg> kafkaCfgs=entry.getValue();
    for (    KafkaCfg kafkaCfg : kafkaCfgs) {
      if (existsTopics.containsKey(kafkaCfg.getTopic())) {
        TopicDescription topicDescription=existsTopics.get(kafkaCfg.getTopic());
        List<TopicPartitionInfo> partitions=topicDescription.partitions();
        if (partitions.size() < kafkaCfg.getPartitions()) {
          kafkaAdmin.addPartitionsForTopic(kafkaCfg.getTopic(),kafkaCfg.getPartitions());
          topicDescription=kafkaAdmin.getDescriptionByTopic(kafkaCfg.getTopic());
        }
        initKafkaCfgMetaData(kafkaCfg,topicDescription);
      }
 else {
        kafkaAdmin.createTopic(kafkaCfg.getTopic(),kafkaCfg.getPartitions(),kafkaCfg.getReplicationFactor());
        TopicDescription topicDescription=kafkaAdmin.getDescriptionByTopic(kafkaCfg.getTopic());
        initKafkaCfgMetaData(kafkaCfg,topicDescription);
      }
    }
    kafkaAdmin.close();
  }
}

Fixed version (ground truth):
public void load(Map<String,KafkaCfg> kafkaMap){
  if (kafkaMap == null || kafkaMap.isEmpty()) {
    return;
  }
  Map<Integer,List<KafkaCfg>> topics=groupBy(kafkaMap);
  for (  Entry<Integer,List<KafkaCfg>> entry : topics.entrySet()) {
    int poolId=entry.getKey();
    PoolCfg poolCfg=RedisEngineCtx.INSTANCE().getPoolCfgMap().get(poolId);
    StringBuffer servers=new StringBuffer();
    List<String> nodes=poolCfg.getNodes();
    for (int i=0; i < nodes.size(); i++) {
      String str=nodes.get(i);
      String[] node=str.split("String_Node_Str");
      servers.append(node[0]).append("String_Node_Str").append(node[1]);
      if (i < nodes.size() - 1) {
        servers.append("String_Node_Str");
      }
    }
    KafkaAdmin kafkaAdmin=new KafkaAdmin(servers.toString());
    Map<String,TopicDescription> existsTopics=kafkaAdmin.getTopicAndDescriptions();
    List<KafkaCfg> kafkaCfgs=entry.getValue();
    for (    KafkaCfg kafkaCfg : kafkaCfgs) {
      if (existsTopics.containsKey(kafkaCfg.getTopic())) {
        TopicDescription topicDescription=existsTopics.get(kafkaCfg.getTopic());
        List<TopicPartitionInfo> partitions=topicDescription.partitions();
        if (partitions.size() < kafkaCfg.getPartitions()) {
          kafkaAdmin.addPartitionsForTopic(kafkaCfg.getTopic(),kafkaCfg.getPartitions());
          topicDescription=kafkaAdmin.getDescriptionByTopic(kafkaCfg.getTopic());
        }
        initKafkaCfgMetaData(kafkaCfg,topicDescription);
      }
 else {
        kafkaAdmin.createTopic(kafkaCfg.getTopic(),kafkaCfg.getPartitions(),kafkaCfg.getReplicationFactor());
        TopicDescription topicDescription=kafkaAdmin.getDescriptionByTopic(kafkaCfg.getTopic());
        initKafkaCfgMetaData(kafkaCfg,topicDescription);
      }
    }
    kafkaAdmin.close();
  }
}