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Questions tagged [hazelcast]

Hazelcast is an open source In-Memory Data Grid platform. The architecture supports high scalability and data distribution in a clustered environment. It supports auto-discovery of nodes and intelligent synchronization.

Hazelcast is an open source In-Memory Data Grid platform. The architecture supports high scalability and data distribution in a clustered environment.

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Hazelcast new compact-serialization is not working with Hazelcast Jet Pipeline

I have tested Compact serialization is working well with Hazelcast Version 5.0.2 but when I try to use it with Jet Pipeline job then getting below error of serialization. Exception in thread "main" java.util.concurrent.CompletionException:…
Vijay Patel
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Hazelcast's CacheManager not injected by Spring Boot

I'm trying to setup Hazelcast 4.2.0 with Spring Boot 2.1.18, and those are my dependencies: org.springframework.boot spring-boot-starter-integration …
Bambatrack
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Hazelcast remove from iQueue skipping some elements

I have hazelcast client that is putting generic message class into a iQueue and hazelcast member consume this generic message via Listener do the logic and remove the object from the queue. But it is not removing all the objects. On mancenter i can…
Владимир Гичев
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Hazelcast - distributed data structure state of other members / monitoring consistency corruption

I have a distributed IMap (exposed through a JCache implementation). When I access it, I get the data of the requesting member. I wish to see the state of this dataset in other members in order to debug consistency corruption scenarios such as stale…
Ido Gal
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Is it possible in Hazelcast (client-server model) to indicate the service to build the cache?

I have 2 microservices in spring boot (let's say microservice A and B) and client-server Hazelcast. There is some cache-building logic in microservice A and I want to use the same cache in microservice B. I know we can get the Map and use it. But…
Pawan Aichra
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How to Auto discovery Two or More Application Using Hazelcast in Docker?

I have an application that uses hazelcast. I am running two containers related to this application in docker emvironment. The configuration of hazelcast is same(group name, password, multicast or tcp-ip for network join) However, they cannot see…
Gurbozo
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Hazelcast update entities

I want to know if there is a way to let Hazelcast automatically sync the cache with all the updates that an entity receives. here's an example: I want to update an entity that has been stored into a cache and is also used in other caches. I do a…
Bambatrack
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Hazelcast Cache metric error with Spring Boot 2.1.9.RELEASE

We are unable to start our Spring Boot application (version 2.1.9.RELEASE) when using Hazelcast (artifact hazelcast-all and version 4.1). I get error An attempt was made to call a method that does not exist. The attempt was made from the following…
Shraddha Kadam
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Hazelcast ignores logging type

My team has recently switched my application's backend logger. So, I added the following lines to my hazelcast.yml hazelcast: properties: hazelcast.logging.type: slf4j Unfortunately, it insists on still attempting to use the Log4j config and…
Jason
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How to run Hazelcast 3.11 with a group (cluster) name from Docker?

How do I run Hazelcast 3.11 version with a group name? In later versions there's an environment variable for that HZ_CLUSTERNAME but in 3.11 I can't find anything like it in documentation. This is how I'm trying to launch Hazelcast docker run \ …
Ethan
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How to create index map in Hazelcast running as separate server

we are using Predicate API for querying the map in Hazelcast (4.2). I've found a doc how to add index to the map (https://docs.hazelcast.com/imdg/4.2/query/how-distributed-query-works#indexing-queries). Unfortunately, all configuration I've found is…
Ivo Š.
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Hazelcast, recovering a MessageListener member after termination due to message loss

We have a ReliableMessageListener that synchronizes some data structures that it holds across the cluster by the onMessage implementation. The cluster is composed of three nodes. We noticed that one of the topics gets out of sync, and had been…
Ido Gal
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What is the recommended max message size in Hazelcast?

I'm trying to understand the recommended max message size in Hazelcast. The best documentation I can find is https://docs.hazelcast.com/hazelcast/5.0/capacity-planning where it says An optimum partition size is between 50MB – 100MB Does this mean…
Grammin
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How to compare 2 instants with Hazelcast predicate?

I would like to create a query with Hazelcast predicate to compare 2 instant type dates. However when I compare 2 different instants with lessEqual or greaterEqual, I have a wrong result set. Is there any way to compare 2 instant type objects with…
Bu_A
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Cannot invoke "com.vaadin.flow.server.VaadinService.getContext()", the return value of "com.vaadin.flow.server.VaadinSession.getService()" is null

I'm trying to setup a Vaadin 22 project using spring, spring-boot and hazelcast for session replication. If I remove everything related to Hazelcast, the execution runs smoothly and I can login (through Keycloak) to my UI. As soon as I add the…
Luca Trecarichi
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