Jeremy Kahn created AVRO-1265:
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Summary: Python: schema objects should support builder()
default-filling behavior
Key: AVRO-1265
URL: https://issues.apache.org/jira/browse/AVRO-1265
Project: Avro
Issue Type: Improvement
Components: python
Reporter: Jeremy Kahn
Assignee: Jeremy Kahn
Priority: Minor
Fix For: 1.7.5
There seems to be no way to easily use the avro libraries in Python (where I
feel most qualified to comment) to encode generics with "missing default
values" and have them transmitted in well-formed avro binary.
If you fill in the "missing" default values, the Python libraries will transmit
correctly.
I'd be happy to add methods to the avro.RecordSchema objects (in the Python
libraries) that "fill defaults" on missing member fields of a record,
recursively (which probably means method extension of other schema classes as
well).
For backwards compatibility (and probably to avoid unnecessary data traversal),
clients probably want to explicitly ask the schema to fill in defaults before
transmission in the cases where you'd like to set only the non-default values.
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