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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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Cluster gets into state where members restart repeatedly and clients cannot update the data in the cluster

We've been using Hazelcast for a number of years but I'm new to the group. We have a cluster formed by a dedicated Java application (it's sole purpose is to provide the cluster). It's using the 3.8.2 jars and running JDK 1.8.0_192 on Linux (Centos…
Dave Williams
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Hazelcast: There is no suitable de-serializer for type 1453

I am trying to add Hazelcast as a session manager with a spring boot project. I created a Hazelcast cluster in docker and Hazelcast client using Java like the code below. @Configuration @EnableHazelcastHttpSession public class SessionConfiguration…
azguindou
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Hazelcast getSql().execute() throws Unrecognized client message received with type: 0x210100

I am trying out Hazelcast client-server. So far, I Got up hazelcast server members Create a spring boot application and connected to hazelcast Inserted/updated/queried Imap in hazelcast instance Used SQL Predicate to query map objects Now I am…
Maram Sreerama Reddy
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Each pod has its own Hazelcast iList

I configured in the hazelcast.xml file of my microservice a list like following false 1 When I deployed the microservice on k8s cluster with…
MedMahmoud
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What are new API for old thing HazelcastInstance hzClient = HazelcastClient.newHazelcastClient();?

I follow tutorial at https://www.youtube.com/watch?v=AjpSdbdvIHw My code pom.xml
Vy Do
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Hazelcast: mancenter serialization configuration ignored

I've created this hazelcast configuration into my mancenter on /config/hazelcast-client.yaml: hazelcast-client: network: kubernetes: enabled: true namespace: ${namespace} service-name: ${serviceName} serialization: …
Jordi
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How to reboot application without losing the TreeMap kept in memory?

In a Spring Boot application, I keep a TreeMap in memory. I'm doing around 10,000 operations per second, and it may increase. To improve performance, I kept data in memory. I want my app to be able to start from the same state when application is…
T. Ç
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How to create Composite index in Hazelcast

I am trying to improve performance of Hazelcast lookup by using composite key. I have a class entity Class Entity { private Long id; private String field1; private String field2; private String field3; // getter and setters } I…
Pratap
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Hazelcast client streaming API

I'm using Hazelcast multimap. how to create streaming API for Hazelcast multimap listener based on my key. I need to use that API in any frontend applications. if any changes come into the Hazelcast map that needs to be reflected into the API.
Code_X
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The class ClientType is missing from package com.hazelcast.core from version 4.0 up

Hie guys please assist. I have been going through the documentation and the class ClientType in package com.hazelcast.core is missing. In version 3.12 the class exists and then in v4.0 upwards the class mysteriously disappears. Where did the class…
Mthokozisi Nyoni
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JCache Hazelcast embedded does not scale

Hello, Stackoverflow Community. I have a Spring Boot application that uses Jcache with Hazelcast implementation as a cache Framework. Each Hazelcast node has 5 caches with the size of 50000 elements each. There are 4 Hazelcast Instances that form a…
Anton Skripin
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Hazelcast CP Subsystem and Hazelcast’s failure detectors

I am trying to configure the CP Subsystem in Hazelcast. Based on the Hazelcast documentation, it claims the following: "CP Subsystem relies on Hazelcast’s failure detectors to test the reachability of CP members. Before removing a CP member from CP…
A. Skripin
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How to add new Identified Serializable classes without Hazelcast cluster restart from client code

Let's say I have class1 which is implementing Identified Serializable and created jar and put this library in Hazelcast/bin/user-lib. If I want to add new Identified Serializable class "class2" in that jar file then again I need to put it in the…
Vijay Patel
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Gradle downgrading Hazelcast dependency when there's no other transitive dependency

I am using Gradle to include project A to my project B, where A has a dependency implementation group: 'com.hazelcast', name: 'hazelcast', version: '5.0.2' Then I include A in B's build.gradle file implementation(group: '', name: 'A',…
Dyson
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Adapter/Mapper to translate SQL queries to Hazelcast predicates and/or SQL queries

I am working with an application where we have SQL Server as a database. There is a requirement to add Hazelcast cache layer over the SQL Server. This is a legacy system and sort of works like SQL as a service where SQL queries to be executed…
Casual Gamer
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