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https://issues.apache.org/jira/browse/NIFI-2865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15552020#comment-15552020
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ASF GitHub Bot commented on NIFI-2865:
--------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/nifi/pull/1097


> Address issues of PublishKafka blocking when having trouble communicating 
> with Kafka broker and improve performance
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-2865
>                 URL: https://issues.apache.org/jira/browse/NIFI-2865
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>            Reporter: Mark Payne
>            Assignee: Mark Payne
>             Fix For: 1.1.0
>
>
> When NiFi is unable to communicate properly with the Kafka broker, we see the 
> NiFi threads occasionally block. This should be resolvable by calling the 
> wakeup() method of the client. Additionally, if Kafka takes too long to 
> respond, we should be able to route the FlowFile to failure and move on.
> PublishKafka has a nice feature that allows a demarcated stream to be sent as 
> separate messages, so that a large number of messages can be sent as a single 
> FlowFile. However, in the case of individual messages per FlowFile, the 
> performance could be improved by batching together multiple FlowFiles per 
> session



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