Hi All,

I came across attached intermittent hazelcast error[1] when doing some
tests on MQTT, 2-node cluster with latest code base. All messages are 1KB.
Slot storage mode has set to RDBMS.
After this error all operations on that node halted.

Following is the scenario I tested.

nodeA (coordinator)
publish to 'topicA' with QOS-1 100TPS
publish to 'topicC' with QOS-1 100TPS
publish to 'topic1' with QOS-0 100TPS
publish to 'topic3' with QOS-0 100TPS
subscribe to 'topicB' with 5 QOS-1 subscribers.
subscribe to 'topicD' with 5 QOS-1 subscribers.
subscribe to 'topic2' with 20 QOS-0 subscribers.
subscribe to 'topic4' with 20 QOS-0 subscribers.

nodeB
publish to 'topicB' with QOS-1 100TPS
publish to 'topicD' with QOS-1 100TPS
publish to 'topic2' with QOS-0 100TPS
publish to 'topic4' with QOS-0 100TPS
subscribe to 'topicA' with 5 QOS-1 subscribers.
subscribe to 'topicC' with 5 QOS-1 subscribers.
subscribe to 'topic1' with 20 QOS-0 subscribers.
subscribe to 'topic3' with 20 QOS-0 subscribers.

Have anyone faced this exception with hazelcast? What can be the cause of
the issue?

[1] https://wso2.org/jira/browse/MB-1193


Thanks,
Pumudu
-- 
Pumudu Ruhunage
Associate Software Engineer | WSO2 Inc
M: +94 779 664493  | http://wso2.com

Attachment: hazelcast.core.OperationTimeoutException
Description: Binary data

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