Cache map not showing up on Hazelcast Management Center

[Manish Kumar]

Hey Guys,

When I set the cache config as given below, that cache map doesn't show up on Hazelcast Management Center. I tried accessing the cache map at later stage and I was successfully able to read/write the data to the map.

hazelcastConfig.getMapConfigs().put("myMap", new MapConfig("Map1").setBackupCount(0).setAsyncBackupCount(0));

If I don't do it as mentioned above(basically not set any MapConfig) then it shows up on  Hazelcast Management Center.

Highly appreciate your help!!!

[Ahmet Mircik]

Hi,

What were the hazelcast and management-center versions in use? Are you setting map config after hazelcast instance creation? Dynamic config is not supported for imap .

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[Manish Kumar]

Hazelcast version 3.6.3

Management Center Version - 3.7

No, we are creating the MapConfig before Hazelcast instance creation.

[Hasan Çelik]

Hi Manish,

As expected, if you create map config but you do not touch map(put,get etc) , this map does not show up on management center.

[Manish Kumar]

We did write/read on the same map in other places of our codebase, and it never showed up.

Please let me know if you guys want me to add a reproducer. 

[Hasan Çelik]

I tried with multiple nodes but i could not reproduce this issue. It would be great if you add reproducer.

[Manish Kumar]

Actually I was using Vertx + Hazelcast, where Vertx will initialize Hazelcast while I just pass the config object.

When I created a standalone Hazelcast project then I was able to see the maps on management center. So, I will look into what's going on with Vertx based project.

With standalone Hazelcast project, even though I had set the backup count to zero, on management center it was still showing the backup. I have added reproducer https://github.com/manish-panwar/hazelcast-map-not-showing-on-mancenter

[Manish Kumar]

I also noticed one thing, if you put the map config using the same key as "map config name" then also it doesn't show on Management Center.

e.g. config.getMapConfigs().put("ABC", new MapConfig().setName("ABC").setStatisticsEnabled(false).setBackupCount(0).setAsyncBackupCount(0));

[Hasan Çelik]

This problem is not related to map name or config name, is directly related to setStatisticsEnabled(false) config. Here is the my reproducer:

public class MapConfigDoesNotShowUp {
    public static void main(String[] args) throws InterruptedException {

        ....
        config.getMapConfigs().put("map1",new MapConfig("1").setStatisticsEnabled(false).setBackupCount(0).setAsyncBackupCount(0));
        config.getMapConfigs().put("map2",new MapConfig("2").setBackupCount(0).setAsyncBackupCount(0));

        HazelcastInstance instance = Hazelcast.newHazelcastInstance(config);
        instance.getMap("map1").put("test","test");
        instance.getMap("map2").put("test","test");
    }
}

In the current status, management center starts to show map2 but it does not show map1. setStatisticsEnabled's default value is true for map.

14 Ekim 2016 Cuma 17:50:54 UTC+3 tarihinde Manish Kumar yazdı:

[Manish Kumar]

Hasan,

Thanks a lot for looking into it! I am doing the code same as yours; surprisingly when I deploy this code on multiple node, I still see the backup for ABC & XYZ, on management center, but map1 & map2 there is not back up. How come it could be possible. Can you please take a look at my code?

public static void main(String[] args) {
    Config config = new Config();

    // Create Join Config with TCP.
    config.getNetworkConfig().setJoin(new JoinConfig()
            .setMulticastConfig(
                    new MulticastConfig().setEnabled(false))
            .setTcpIpConfig(
                    new TcpIpConfig().setEnabled(true)
                            .addMember(getNetworkInterfaces().get(0)).addMember(getNetworkInterfaces().get(1))));
    config.setManagementCenterConfig(
            new ManagementCenterConfig()
                    .setEnabled(true)
                    .setUrl("http://1.1.1.1:8080/mancenter"));

    config.getMapConfigs().put("map1",new MapConfig("1").setBackupCount(0).setAsyncBackupCount(0));

    config.getMapConfigs().put("map2",new MapConfig("2").setBackupCount(0).setAsyncBackupCount(0));

    // If we remove below line then MAP start showing on Management Center.
    config.getMapConfigs().put("111", new MapConfig("ABC").setBackupCount(0).setAsyncBackupCount(0));
    config.getMapConfigs().put("222", new MapConfig("XYZ").setBackupCount(0).setAsyncBackupCount(0));

    HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance(config);

    hazelcastInstance.getMap("map1").put("test","test");
    hazelcastInstance.getMap("map2").put("test","test");
    hazelcastInstance.getMap("ABC").put("name", "manish");
    hazelcastInstance.getMap("XYZ").put("name", "manish");
}

public static List<String> getNetworkInterfaces() {
    try {
        return list(NetworkInterface.getNetworkInterfaces()).stream()
                .flatMap(ni -> list(ni.getInetAddresses()).stream())
                .filter(address -> !address.isAnyLocalAddress())
                .filter(address -> !address.isMulticastAddress())
                .filter(address -> !address.isLoopbackAddress())
                .filter(address -> !(address instanceof Inet6Address))
                .map(InetAddress::getHostAddress)
                .collect(Collectors.toList());
    } catch (final SocketException ex) {
        throw new RuntimeException("Unable to determine network interfaces for this node.", ex);
    }
}

[Hasan Çelik]

Manish,

config.getMapConfigs().put("111", new MapConfig("ABC").setBackupCount(0).setAsyncBackupCount(0));

                             |                    |

                        map name          config name

In this config, map name is 111 not ABC. So if you want to get this map (111), you should change your config like this:

hazelcastInstance.getMap("111").put("name", "manish");

And map 111's backup count will be 0.

----------

When you try to get map via this code, 

hazelcastInstance.getMap("ABC").put("name", "manish");

hazelcast creates new map its name is ABC and returns it. This map's backup is 1 because of default value of backup count.

To view this discussion on the web visit https://groups.google.com/d/msgid/hazelcast/f4f5f1fa-d49e-4f2e-9068-a5cf19418aed%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.

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Hasan Celik

Software Engineer
Mahir İz Cad. No:35 34662 İstanbul

ha...@hazelcast.com
+905327053109

[Manish Kumar]

Thanks a lot for your help, Hasan!!!