RedisClusterClient use transactions with multi and exec and discard not work

hi I get a RedisClusterAsyncConnection with RedisClusterClient.connectClusterAsync() method. but the transactions not work. code is below.

List<RedisURI> initialUris = new ArrayList<RedisURI>();
initialUris.add(RedisURI.Builder.redis("192.168.2.120", 7000).build());
initialUris.add(RedisURI.Builder.redis("192.168.2.120", 7001).build());
initialUris.add(RedisURI.Builder.redis("192.168.2.120", 7002).build());
initialUris.add(RedisURI.Builder.redis("192.168.2.120", 7004).build());
RedisClusterClient rcc = new RedisClusterClient(initialUris);
RedisClusterAsyncConnection<String, String> conn = rcc.connectClusterAsync();
try {
    if( conn.multi().get().equals("OK") ){
        conn.set("city.name", "beijing");
        System.out.println( 1 / 0);
        conn.exec().get();
    }
} catch (Exception e) {
    conn.discard().get()
}

the code will occur exception, conn.exec().get() not run, conn.discard().get() is run. but the transaction commited. why? please help me!1

[mp911de]

There’s no multi support from a top-level cluster connection perspective because there are no distributed transactions in Redis. If you want to use transactions, then obtain a node-specific connection to the node that holds the keys you want to touch within the transaction (StatefulRedisClusterConnection .getConnection(…)).

Please use StackOverflow or the mailing list if you have further questions.

[yiukalun]

The getConnection API was deprecated in Lettuce 4.

I am not sure how to perform multi() on clustered connection using Lettuce too.

Anyone can help?