[Backlogmanager] [FIWARE-JIRA] (HELP-16903) [fiware-stackoverflow] Fiware IoT Agent Data loss During MQTT Broker data subscription

[Jason Fox (JIRA)]

    [ https://jira.fiware.org/browse/HELP-16903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=114457#comment-114457 ] 

Jason Fox commented on HELP-16903:
----------------------------------

Engaged with user, ascertained that this is a duplicate of another question on StackOverflow: stackoverflow.com/questions/63136089

StackOverflow is *not* an open customer service website for FIWARE and the questions posted there need to follow a set style and apply to a given set of rules: https://stackoverflow.com/help/on-topic - Repeating a question without more detail instead of providing more information on the original question is not going to get any response on StackOverflow.



> [fiware-stackoverflow] Fiware IoT Agent Data loss During MQTT Broker data subscription
> --------------------------------------------------------------------------------------
>
>                 Key: HELP-16903
>                 URL: https://jira.fiware.org/browse/HELP-16903
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Jason Fox
>              Labels: fiware
>
> Created question in FIWARE Q/A platform on 24-08-2020 at 15:08
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/63562400/fiware-iot-agent-data-loss-during-mqtt-broker-data-subscription
> +Question:+
> Fiware IoT Agent Data loss During MQTT Broker data subscription
> +Description:+
> we have seen IoT Agent not receiving all the data from MQTT Broker(Vernemq) after restart the MQTT broker.Plz find below the testing scenario.
> we  did the testing with MQTT Broker(vernemq) in 1 ec2  and 2 iot Agent with restating vernemq in between
> 1- send 11 and 24  records
> Received 11 and 24 at iot agent
> 2- Restarted EC2 vernemq
> 3- send 24  records
> Received 7 at IoT Agent
> Note: Where other Subscriber got all 24 records at same time.
> 4- Restarted IoT Agent and Send 24 records
> Received 24 at IoT Agent
> Data loss we are seeing while MQTT broker getting restart and IoT Agent still running.
> Please help us resolving the data loss issue.
> enter image description here



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