我试图扫描JedisCluster中存储的特定密钥。

String product = "MMATest";

String redisServer = "mycachecluster.eaogs8.0001.usw2.cache.amazonaws.com:6379,mycachecluster.eaogs8.0002.usw2.cache.amazonaws.com:6379";
    Set<HostAndPort> jedisClusterNode = new HashSet<>();
    String[] serversArray = redisServer.split(";");
    for (String aServersArray : serversArray) {
        jedisClusterNode.add(new HostAndPort(aServersArray.split(":")[0],
                Integer.valueOf(aServersArray.split(":")[1])));
    }
    JedisCluster jedisCluster = new JedisCluster(jedisClusterNode,
            buildPoolConfig());

ScanParams params = new ScanParams();
StringJoiner joiner = new StringJoiner("");
joiner.add("{");
joiner.add("Image-"+product);
joiner.add("}");
params.match(joiner.toString()).count(100);
System.out.println(joiner.toString());
ScanResult<String> scanResult = null;
String scanMarker = "0";
 do {
     scanResult = jedisCluster.scan(ScanParams.SCAN_POINTER_START, params);
      System.out.println(scanResult.getResult());
             System.out.println(!(scanResult.getResult() == null || scanResult.getResult().isEmpty()));

         } while (!scanMarker.equals("0"));

        ScanResult<Map.Entry<String,String>> scan = jedisCluster.hscan(joiner.toString(), ScanParams.SCAN_POINTER_START);
        System.out.println(scan.getResult());

在这里，我得到了空值。但是群集节点中存储了一个值。

但是，如果我尝试扫描每个Jedis池，我将得到结果。

  Map<String, JedisPool> jedisPools = jedisCluster.getClusterNodes();
         Set<String>jedisPoolList = jedisPools.keySet();
         System.out.println(jedisPools.keySet());
         System.out.println(jedisPools.values());
         System.out.println(jedisPools.size());
         for (String hostAndPort : jedisPoolList) {
             String[] parts = hostAndPort.split(":");
             String host = parts[0];
             int port = Integer.valueOf(parts[1]);
             try (Jedis jedis = new Jedis(host, port)) {
                 ScanParams params = new ScanParams().match("Image-"+product).count(100);
                 String scanMarker = "0";
                 ScanResult<String> results = null;

                 do {
                     results = jedis.scan(scanMarker, params);
                     System.out.println("XXXX"+results.getResult());
                     System.out.println("XXXX"+!(results.getResult() == null || results.getResult().isEmpty()));

                 } while (!scanMarker.equals("0"));
             }
         }

为什么JedisCluster扫描方法无法提供正确的结果？我该如何解决这个问题？

注意：我可以jedisCluster.exists(key)用来检查密钥的存在。但是我需要使用扫描，因为我可以对Jedis和JedisCluster使用相同的界面。