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Posted to issues@nifi.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2021/05/19 18:37:00 UTC
[jira] [Commented] (NIFI-8466) Offloading the Single Node load
balancing target causes ignored backpressure
[ https://issues.apache.org/jira/browse/NIFI-8466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347821#comment-17347821 ]
ASF subversion and git services commented on NIFI-8466:
-------------------------------------------------------
Commit e19940ea7ecff9b88b1fc2ac1aa5c1c8b3c3a777 in nifi's branch refs/heads/main from Joe Gresock
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=e19940e ]
NIFI-8466: Resolving offload bug with Single Node load balanced queues
Signed-off-by: Nathan Gough <th...@gmail.com>
This closes #5025.
> Offloading the Single Node load balancing target causes ignored backpressure
> ----------------------------------------------------------------------------
>
> Key: NIFI-8466
> URL: https://issues.apache.org/jira/browse/NIFI-8466
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.14.0
> Reporter: Joseph Gresock
> Assignee: Joseph Gresock
> Priority: Minor
> Attachments: Single_Node_Queue.xml
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> In a 3-node cluster, it is possible to get a Single Node load balanced queue into the following state by offloading the node that receives the load balanced flow files:
> # The load balanced queue ignores backpressure
> # The processor following the load balanced queue acts like it has nothing to process, even when running
> Steps to reproduce:
> # Add a Single Node load balanced queue on a multi-node cluster (see attached Template)
> # Discover which node receives the flow files in the queue by running only the first processor, then viewing the Connections tab of the Summary view, and finally clicking the Cluster button for the load balanced queue. The node that has all the flow files is the one you will need to Offload in the next step
> # Disconnect and then Offload the node that gets the flow files in Single Node load balancing
> # Reconnect the node
> # Run both processors surrounding the load balanced queue
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