Koji Kawamura created NIFI-3921:
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Summary: Utilize schema embedded in incoming FlowFile from record
Writers
Key: NIFI-3921
URL: https://issues.apache.org/jira/browse/NIFI-3921
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Affects Versions: 1.2.0
Reporter: Koji Kawamura
Currently, any record writer has to retrieve schema from either SchemaRegistry
or Schema text. It doesn't work well with schema embedded Avro record as
incoming FlowFile.
For example, ExecuteSQL outputs Avro record with schema embedded, and if user
wants to convert it to Json, they have to register the schema to SchemaRegistry.
I expect we don't have to touch registry in that use-case.
AvroReader has 'Use Embedded Avro Schema' option for 'Schema Access Strategy',
so processor such as ConvertRecord or QueryRecord can read record with embedded
schema, however since any writer doesn't have such option for 'Schema Access
Strategy', user have to register the schema in a SchemaRegistry for those
record operations to work properly.
I had to view a FlowFile which has embedded schema from NiFi content viewer and
copy the schema text then add it to registry. Plus extra UpdateAttribute is
needed to add 'schema.name' attribute. These extra work can be avoided.
If writers can utilize embedded schema, we can provide more seamless UX with
schema embedded data.
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