Mark Bean created NIFI-4798:
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Summary: UpdateAttribute should allow empty string values without
requiring state management
Key: NIFI-4798
URL: https://issues.apache.org/jira/browse/NIFI-4798
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework, Extensions
Affects Versions: 1.5.0
Reporter: Mark Bean
The conditional validation of dynamic properties in UpdateAttribute use the
NON_EMPTY_STRING validator when state management is not enabled. This prevent
the "Set empty string" checkbox option. The introduction of state management to
this processor changed this behavior which previously allowed an empty string
for an attribute value. The validator for the non-stateful case should be
changed to return the original behavior.
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