public Set<String> hKeys(String key) throws Exception {
Jedis jedis = null;
try {
jedis = this.jedisPool.getResource();
Set<byte[]> hkeys = jedis.hkeys(SafeEncoder.encode(key));
LOG.info("hkeys key:" + key);
if (CollectionUtils.isEmpty(hkeys)) {
return new HashSet<String>(1);
} else {
Set<String> keys = new HashSet<String>(hkeys.size());