Re: Hazelcast - two web-apps on one server uses one Map<> - incremently allocating ports

[Enes Akar]

Where do you call below line?
private static HazelcastInstance instance = Hazelcast.newHazelcastInstance();

It should be called once for each app. 

On Wed, May 22, 2013 at 4:03 PM, <michael.k...@gmail.com> wrote:

Hello, everyone. I'm a newbie at Hazelcast and i try to use it for my goals. I have to different web apps, both have the same logic layer (compiled into jar) and two different front ends. In my test environment they are both running the same Tomcat7. I want to use Hazelcast distributed map to cache some business logic data between these two apps. The code that uses Hazelcast seems pretty simple:

final static String DistributedMapName = "SystemUserActivityMap";

private static HazelcastInstance instance = Hazelcast.newHazelcastInstance();

I created hazelcast.xml and placed it in both web-apps into resources dir:

<hazelcast xmlns="http://www.hazelcast.com/schema/config">

    <network>

        <port auto-increment="true">5701</port>

        <join>

            <multicast enabled="false">

                <multicast-group>224.2.2.3</multicast-group>

                <multicast-port>54327</multicast-port>

            </multicast>

            <tcp-ip enabled="true">

                <interface>127.0.0.1</interface>

            </tcp-ip>

            <aws enabled="false">

            </aws>

        </join>

    </network>

    <map name="SystemUserActivityMap">

        <backup-count>0</backup-count>

        <time-to-live-seconds>0</time-to-live-seconds>

        <max-idle-seconds>86400</max-idle-seconds>

        <eviction-policy>NONE</eviction-policy>

        <max-size>0</max-size>

        <eviction-percentage>25</eviction-percentage>

    </map>

</hazelcast>

And soon after starting my apps, i saw in Tomcat errorlog strange messages: it seems that Hazelcast starts allocationg new ports: 

initially it was

Members [1] {

Member [127.0.0.1]:5701 this

}

and soon it was

Members [9] {

Member [127.0.0.1]:5701

Member [127.0.0.1]:5702

Member [127.0.0.1]:5703

Member [127.0.0.1]:5704

Member [127.0.0.1]:5705

Member [127.0.0.1]:5706

Member [127.0.0.1]:5707 this

Member [127.0.0.1]:5708

Member [127.0.0.1]:5709

}

and it's continue incrementing and so on...

what's wrong with my config, code or usage scenario?

Thanks for any help..

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Enes Akar

Hazelcast | Open source in-memory data grid
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