[jira] [Created] (NIFI-5320) Template instantiation failure when multiple component nar versions exist

["Matthew Clarke (JIRA)" <ji...@apache.org>]

Matthew Clarke created NIFI-5320:
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             Summary: Template instantiation failure when multiple component nar versions exist
                 Key: NIFI-5320
                 URL: https://issues.apache.org/jira/browse/NIFI-5320
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
    Affects Versions: 1.5.0
            Reporter: Matthew Clarke


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
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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.
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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"
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When there are not multiple nar versions, template instantiation works fine since NiFi will automatically select the current processor version.
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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)
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