Alasdair Brown created NIFI-7891:
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Summary: Allow for Defaults to be set by Avro writers
Key: NIFI-7891
URL: https://issues.apache.org/jira/browse/NIFI-7891
Project: Apache NiFi
Issue Type: New Feature
Components: Extensions
Reporter: Alasdair Brown
This would be an improvement to Avro writer services. Allowing a set of default
values to be given based on the data type when infering the schema.
For example, you could have an additional property per type (e.g. Int, String,
etc.) where the value of the property would be used as the default value.
However, this would add a lot of properties.... Possibly you could provide a
JSON set of types -> defaults, e.g.
{code:java}
[
{ "type":"string", "default":"test"},
{ "type":"int", "default":1},
]{code}
Thus, for any field inferred as type String, it's embedded Avro schema contains
a default value entry for that field.
This would then provide flexibility where NULL values are present - the
current behaviour only supports adding NULL to the allowable types - this would
be a very useful alternative.
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