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https://issues.apache.org/jira/browse/NIFI-15078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabriel Orstadius-Bui updated NIFI-15078:
-----------------------------------------
Affects Version/s: 2.6.0
> Moving PG connected to component outside of snippet breaks Flow
> ---------------------------------------------------------------
>
> Key: NIFI-15078
> URL: https://issues.apache.org/jira/browse/NIFI-15078
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 2.6.0
> Reporter: Gabriel Orstadius-Bui
> Priority: Major
>
> Normally, when using PUT snippets/\{id} to move a snippet to another PG, NiFi
> checks if the snippet has any "loose connections", which leads to this error:
> _"One or more components within the snippet is connected to a component
> outside of the snippet. Only a disconnected snippet may be moved."_
> However, when moving a snippet with a sub-PG that has an input/output Port,
> and the components connected to the Port is not part of the snippet, NiFi
> "successfully" moves the snippet.
> At first, everything seems to still be fine, but after a few minutes NiFi
> realizes the Flow is broken and NiFi becomes unusable (see exception below).
> To resolve the issue, we had to revert the entire flow.json.gz to an archived
> older version.
> Before moving snippets with PGs, out/in-going connections should be checked.
> _"Caused by: java.lang.IllegalArgumentException: Connection has a source with
> identifier 9e8bb659-3fe7-3416-a19e-0b3dc4372ab3 but no component could be
> found in the Process Group with a corresponding identifier_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.addConnection(StandardVersionedComponentSynchronizer.java:3530)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.synchronizeConnections(StandardVersionedComponentSynchronizer.java:820)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.synchronize(StandardVersionedComponentSynchronizer.java:643)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.addProcessGroup(StandardVersionedComponentSynchronizer.java:1387)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.synchronizeChildGroups(StandardVersionedComponentSynchronizer.java:697)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.synchronize(StandardVersionedComponentSynchronizer.java:595)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.lambda$synchronize$10(StandardVersionedComponentSynchronizer.java:393)_
> _at
> org.apache.nifi.controller.flow.AbstractFlowManager.withParameterContextResolution(AbstractFlowManager.java:668)_
> _at
> org.apache.nifi.flow.synchronization.StandardVersionedComponentSynchronizer.synchronize(StandardVersionedComponentSynchronizer.java:388)_
> _at
> org.apache.nifi.groups.StandardProcessGroup.synchronizeFlow(StandardProcessGroup.java:3891)_
> _at
> org.apache.nifi.controller.serialization.VersionedFlowSynchronizer.synchronizeFlow(VersionedFlowSynchronizer.java:465)"_
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