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https://issues.apache.org/jira/browse/NIFI-4938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16470120#comment-16470120
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ASF GitHub Bot commented on NIFI-4938:
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Github user asfgit closed the pull request at:
https://github.com/apache/nifi/pull/2514
> Offline buffering is not supported by paho client version 1.0.2 used in mqtt
> processors.
> ----------------------------------------------------------------------------------------
>
> Key: NIFI-4938
> URL: https://issues.apache.org/jira/browse/NIFI-4938
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: Himanshu Mishra
> Priority: Major
> Fix For: 1.7.0
>
>
> Off line buffering is not supported by paho client version 1.0.2 used in mqtt
> processors which causes problem of "message loss" with QoS 1 and QoS 2 for
> mqtt messages when the client connectivity is lost.
> The version 1.2.0 of paho client supports this off line buffering. Thus
> addressing this issue.
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