My current development environment is mac, java 21, spring boot 3.3.3, maven.3.x.
To use only the features of hazelcast Community Edition ( https://hazelcast.com/community-edition-projects/downloads/ ), I have added the dependency as below.

We are using an implementation of leader election that is based in FencedLock. One thing that we would like to be able to achieve is to tell which member is now the owner.

Hazelcast IMDG 4.2.7.

I’ve been trying to run a Hazelcast Jet pipeline across multiple nodes to fully utilize my machine resources. However, it seems like the job is only running on one node.

Issue :
We recently upgraded hazelcast version from 3.12.13 to 5.4.0.
Initially started with single pod.This single pod join the cluster(master).When we increased pod to 2 or more, Members couldn’t establish connection to each other when
deployed in Kubernetes cluster with Istio Envoy Proxy enabled
Versions:
Java 17
Spring 6.1.7
Hazelcast 5.4.0
Kubernetes
Client Version: 1.29.2
Server Version: 1.28.9-eks-036c24b
Istio 1.20.1
The problem is that one pod goes on 2/2 without problems , the other one continue to crash and print below error
Log Snippet:
com.hazelcast.core.HazelcastException: java.util.concurrent.TimeoutException: JoinMastershipClaimOp failed to complete within 9999991909 NANOSECONDS. Invocation{op=com.hazelcast.internal.cluster.impl.operations.JoinMastershipClaimOp{serviceName=’hz:core:clusterService’, identityHash=1854415116, partitionId=-1, replicaIndex=0, callId=2, invocationTime=1656088715788 (2022-06-24 16:38:35.788), waitTimeout=-1, callTimeout=60000, tenantControl=com.hazelcast.spi.impl.tenantcontrol.NoopTenantControl@0}, tryCount=1, tryPauseMillis=500, invokeCount=1, callTimeoutMillis=60000, firstInvocationTimeMs=1656088715788, firstInvocationTime=’2022-06-24 16:38:35.788′, lastHeartbeatMillis=0, lastHeartbeatTime=’1970-01-01 00:00:00.000′, target=[172.16.70.174]:5701, pendingResponse={VOID}, backupsAcksExpected=-1, backupsAcksReceived=0, connection=null}
at com.hazelcast.internal.util.ExceptionUtil.lambda$static$0(ExceptionUtil.java:56)
at com.hazelcast.internal.util.ExceptionUtil.peel(ExceptionUtil.java:134)
at com.hazelcast.internal.util.ExceptionUtil.peel(ExceptionUtil.java:77)
at com.hazelcast.internal.util.ExceptionUtil.rethrow(ExceptionUtil.java:139)
at com.hazelcast.internal.util.FutureUtil$1.handleException(FutureUtil.java:53)
at com.hazelcast.internal.util.FutureUtil.returnWithDeadline(FutureUtil.java:275)
at com.hazelcast.internal.util.FutureUtil.returnWithDeadline(FutureUtil.java:240)
at com.hazelcast.internal.cluster.impl.TcpIpJoiner.claimMastership(TcpIpJoiner.java:214)
at com.hazelcast.internal.cluster.impl.TcpIpJoiner.tryClaimMastership(TcpIpJoiner.java:169)
at com.hazelcast.internal.cluster.impl.TcpIpJoiner.joinViaPossibleMembers(TcpIpJoiner.java:155)
at com.hazelcast.internal.cluster.impl.TcpIpJoiner.doJoin(TcpIpJoiner.java:96)
at com.hazelcast.internal.cluster.impl.AbstractJoiner.join(AbstractJoiner.java:137)

The Issue i am facing right now with hazelcache is, cache is not update after i posted, delete or update a record, when i did all this task it will required me to refresh the Hazelcash service before the record will get updated in the cache. Thus, this issue of refreshing the service occur when i posted a record for the first time and i fetch the record the record will be fetched from the cache but if i delete the record, the record get deleted from the database but i keep on receiving it on my test client until i refresh hazelcast service before cache get updated and i do not see the record anymore.