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https://issues.apache.org/jira/browse/NIFI-5329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16545361#comment-16545361
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ASF GitHub Bot commented on NIFI-5329:
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Github user patricker commented on the issue:
https://github.com/apache/nifi/pull/2893
@MikeThomsen, you typo'd the JIRA ticket number associated with this PR.
(NIFI-5329 vs NIFI-5239).
> Add ability to "empty queue" on an entire process group
> -------------------------------------------------------
>
> Key: NIFI-5329
> URL: https://issues.apache.org/jira/browse/NIFI-5329
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Affects Versions: 1.6.0
> Reporter: Mark Bean
> Priority: Major
>
> It is desirable to clear all queues in a section of the flow. Specifically, a
> Process Group can be taken as the unit to which 'empty queue' would be
> applied. All connections within the Process Group are emptied.
> If the user does not have permission to empty a given queue, it should be
> excluded. However, all connections which the user has permission should
> complete successfully. A dialog at the end of the operation should indicate
> "X FlowFiles (Y bytes) were removed from Z queues". If appropriate, the
> dialog should also include "X queues were not emptied due to insufficient
> permission"
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