Hazelcast-在分布式地图上获取的锁未在管理中心中显示

Question

I am trying to evaluate hazelcast for distributed lock solution.

I am creating a hazelcast client instance from my application. Then I am acquiring lock over map using IMap.tryLock method. During debug and from logs I am seeing that I could acquire the lock successfully.

After successful lock acquisition I am putting an entry to map.

So at that time instant there is one entry and one lock in the map.

In management center, I can see that there is only one entry in the map but can not see the lock.

Is this the expected behaviour? If this is the expected behaviour what does locks mean for maps in management center?

Answer 1

It's not the expected behaviour. I have tried your scenario with Hazelcast 3.9.1 and Management Center 3.9.1, it shows the lock count correctly.

Which version of Hazelcast and Management Center are you using? I would advise checking if tryLock returns true - you might not be acquiring the lock correctly.