[NIFI-5320] Template instantiation failure when multiple component nar versions exist

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.5.0
• Component/s: Core Framework
• Assignee: Unassigned
• Reporter: Matthew Clarke
• Created: 19/Jun/18 12:02
• Updated: 20/Jun/18 18:20

Description

NiFi allows users to load multiple versions of the same component nar.
For example:
nifi-scripting-nar:1.2.0
nifi-scripting-nar:1.5.0
-
Once I have done this, if i try to instantiate a template to the canvas that has a processor from this nar bundle that is neither of these versions (nifi-scripting-nar:1.3.0), it will fail to instantiate the entire template.
-
This error is displayed to user:
"Multiple versions of org.apache.nifi.processors.script.ExecuteScript exist. No exact match for org.apache.nifi:nifi-scripting-nar:1.3.0"
-
When there are not multiple nar versions, template instantiation works fine since NiFi will automatically select the current processor version.
-
NiFi should allow a user to instantiate a template in such a scenario by either:
1. Prompt user to select which of the available versions to use during instantiation.
2. Auto-select a new version (select most current version by default)
-