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https://issues.apache.org/jira/browse/NIFI-2384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph Witt updated NIFI-2384:
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Attachment: this_aint_right.xml
> Back-pressure should use cycle detection to avoid dead lock conditions
> ----------------------------------------------------------------------
>
> Key: NIFI-2384
> URL: https://issues.apache.org/jira/browse/NIFI-2384
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Affects Versions: 1.0.0
> Reporter: Joseph Witt
> Attachments: this_aint_right.xml
>
>
> If you have a cycle with back pressure being fed by a source with back
> pressure and the source of data is fast enough you can end up in a dead lock
> situation.
> We should have cycle detection occur and then in the presence of a cycle
> which has backpressure on the source edge (back pressure on source edge and
> back pressure on all edges in the cycle) then we should ignore the
> backpressure on the destination edge and pull data from the back pressured
> cycle source edge.
> Attached is a template which can replicate this condition. Look on the
> bottom left cycle.
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