redis集群实现清理前缀相同的key

Map<String, JedisPool> clusterNodes = jedis.getClusterNodes();
                String keysPattern =  keyPrefix + ":*";
                long countX = 0;
                long sTime = System.currentTimeMillis();
                for (Map.Entry<String, JedisPool> entry : clusterNodes.entrySet()) {  
                    Jedis jedisNode = entry.getValue().getResource();  
                    logger.info("redisip:{},port:{}" , jedisNode.getClient().getHost(), jedisNode.getClient().getPort());
                    if (!jedisNode.info("replication").contains("role:slave")) {  
                          Set<String> keys = jedisNode.keys(keysPattern);
                          logger.info("keys长度:{}" , keys.size());
                          Map<Integer, List<String>> map = new HashMap<>(6600);  
                          long countTmp = 0;
                            for (String key : keys) { int slot = JedisClusterCRC16.getSlot(key);
                                /**
                                 * cluster模式执行多key操作的时候，这些key必须在同一个slot上，
                                 * 不然会报:JedisDataException 
                                 */
                                //按slot将key分组，相同slot的key一起提交  
                                if (map.containsKey(slot)) {  
                                    map.get(slot).add(key);  
                                } else {  
                                     List<String> keyList = new ArrayList<String>();
                                     keyList.add(key);
                                     map.put(slot, keyList);  
                                    }
                                 
                            }
                            long count = 0;
                            for (Map.Entry<Integer, List<String>> integerListEntry : map.entrySet()) {  
                                count += jedisNode.del(integerListEntry.getValue().toArray(new String[integerListEntry.getValue().size()]));  
                                logger.info("删除:{}个",count);
                                countX++;
                            }  
                     }
                }
//                 logger.info("删除完成，共删除:{}个",countX);
                    logger.info("删除userid key任务结束，一共删除key数量:{},耗时:{}", countX , System.currentTimeMillis() - sTime);

public Set<String> getByPrefix(String key) {
        Set<String> setResult = new HashSet<>();
        try {
            ShardedJedis jedis  = redisDataSource.getJedisClient();
            Iterator<Jedis> jedisIterator = jedis.getAllShards().iterator();
            while(jedisIterator.hasNext()){
                setResult = jedisIterator.next().keys(key+"*");
            }
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return setResult;
    }