Questions tagged [hazelcast-imap]
IMap is Hazelcast IMDG abstract structure similar to standard library map.
hazelcast-imap
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Inconsistent Data in Hazelcast IMap
I am using Hazelcast 5.3 and have set up a Hazelcast cluster with multiple nodes. I am using an IMap to distribute some data between my microservices. This IMap is backed by a MapStore with a write-...
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Getting HazelcastSerializationException when starting the spring boot application
Can someone tell me what could be a possible resolution for the below exception ?
2024-06-10 07:00:24,459 WARNING [catalina] [com.hazelcast.spi.impl.proxyservice.ProxyService] [10.6.7.136]:5701 [nev-...
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Hazelcast and javax.annotation.* compatability issues while spring upgarde 3.2.4
I have been working on springboot 3.2.4 upgrades where javax.* namespaces have been shifted to jakarta.* namespaces. I see that in the latest Hazelcast 5.4.0 version they have upgraded javax.jms.* to ...
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Hazelcast EntryProcessor process method called twice
We are trying to use Hazelcast EntryProcessor. Our understanding was that the EntryProcessor.process method should be called once on the node where the primary copy exists.
Following is our try:
...
- 49
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Hazelcast management is giving below error while accessing it from chrome even though the service is running fine
Backend down or bad FE build. Could not load mcbootstrap.js".
Can see it's trying to invoke below api while hitting the hazelcast management VIP and it's is failing with 404
Request URL:
https://...
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Hazelcast 3.12.13 - Random disconnects in a 5 node cluster on GCP VMs
We have a 5 node cluster using TCP/IP clustering running on GCP VMs. Occasionally (about once a month), we see all the nodes seeing disconnects. It always starts with a particular node with log lines ...
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Hazelcast Management Center can't connect to cluster when providing custom serializer
Hazelcast Version: 4.2.7
Management Center Version: 5.3.6
Running on Windows via mc-start.cmd in binaries.
I'm trying to configure connection to my cluster that's running on 127.0.0.1:15701 like this:
...
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Purpose of backups in Hazelcast
Background - When I am doing rolling updates on my hazelcast cluster I see higher latencies and throughput. I use docker/kubernetes for my hazelcast deployment and I bring one pod down gracefully and ...
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Hazelcast clear()/isEmpty()/size() calls on IMaps getting stuck
The story started with our production app server running out of http-nio threads (500), and our research revealed that certain requests to the app server (Tomcat) executed a IMap.clear() call via ...
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139
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Hazelcast Performance Issues
I am using Hazelcast in a Spring Boot application. I am just using it in memory, but it's taking up to a minute to get the object. The size of the object can vary depending on what the user uploads, ...
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59
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Hazelcast Cluster: Inconsistent Entry Additions Across Two Instances
I'm running two instances of an application, and each instance is supposed to add its host information to a Hazelcast map named "hosts" during startup.
HazelcastInstance hz = Hazelcast....
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54
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Update field in Map's value in hazelcast without completely overriding a struct
I have a struct in C++
struct Person
{
std::string name;
bool male;
int32_t age;
};
and built a IMap<int, Person> and fill it with values.
auto map = hz.get_map("map").get(...
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66
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Java Hazelcast Near Cache getting evicted very frequently
I have created the Hazelcast Config along with NearCache config as below:
EvictionConfig evictionConfig = new EvictionConfig()
.setEvictionPolicy(EvictionPolicy.NONE)
.setSize(...
- 1,464
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141
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Key Level TTL for Hazelcast Map replace function
I have a requirement where I need to set a key level TTL for my hazelcast Imap backed by an external store.
Now we use replace(object, object, object) a way of optimistic locking to update the value ...
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113
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hazelcast management center: cannot create mapping for iMap<Long, Map<String, Item>>
In hazelcast managment center, why I can't create mapping for iMap cache: iMap<Long, Map<String, Item>>?
It throws this error: "Failed to get SQL DDL mapping for map xyz-cache on ...
- 6,673