Alex Sherwin created NIFI-9176:
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Summary: CSVReader @OnEnabled initializes in wrong order
Key: NIFI-9176
URL: https://issues.apache.org/jira/browse/NIFI-9176
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.14.0
Reporter: Alex Sherwin
The built-in {{org.apache.nifi.csv.CSVReader}} has a few startup methods
annotated with {{@OnEnabled}}
The documentation for {{@OnEnabled}} doesn't specify the order they are invoked
in, however it appears they are sorted alphabetically (at least they are in
1.14.0, it may have been different in earlier versions, it looks like that
behavior may have changed in 1.14.0)
The problem in {{CSVReader}} is that {{storeSchemaAccessStrategy}} runs before
{{storeStaticProperties}} since its first alphabetically.
But, this is the wrong order. The {{storeSchemaAccessStrategy}} depends on
some values that {{storeStaticProperties}} sets up.
Unfortunately it doesn't look like {{@OnEnabled}} documents any guaranteed
ordering (so, is the current alphabetical sorting just an undocumented
implementation detail?)
So either {{storeStaticProperties}} needs to be renamed to come first
alphabetically, or {{storeSchemaAccessStrategy}} needs to invoke
{{storeStaticProperties}}
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