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https://issues.apache.org/jira/browse/NIFI-2608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15436266#comment-15436266
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Joseph Witt commented on NIFI-2608:
-----------------------------------

Have verified that the threads Kafka spawns are seeing the 
NarThreadContextClasslaoder as the current context class loader of those 
threads.  As a result there is nothing for them to bind to in terms of a 
specific NarClassloader.  Looks like we know precisely which NarClassLoader we 
should use when going to a given component so we can be far more precise.  Need 
to understand why we're not already doing this.  But will run some experiments.

> Align Consume Kafka with Kafka 0.9 unified API and support 0.10 clients
> -----------------------------------------------------------------------
>
>                 Key: NIFI-2608
>                 URL: https://issues.apache.org/jira/browse/NIFI-2608
>             Project: Apache NiFi
>          Issue Type: Bug
>            Reporter: Oleg Zhurakousky
>            Assignee: Joseph Witt
>            Priority: Critical
>             Fix For: 1.0.0
>
>
> KafkaConsumer went fro thread-safe in 0.8 to not-thread-safe in 0.9 which was 
> overlooked while implementing new ConsumeKafka processor which relied on 0.9 
> Client API.



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