[AVRO-2000] C-library defaults for resolved-writers and readers

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8.1
• Component/s: c

Environment

Ubuntu 14, Centos7 and OSX

• Assignee: Unassigned
• Reporter: Michael Gray
• Created: 09/Feb/17 02:24
• Updated: 09/Feb/17 02:24

Description

We are in need of having 'default' values work for the avro/lang/c library, particularly on the resolved-writer side. We use avro for message serialization on an internal pub/sub system, but we've seen that the default values in schemas are ignored when a producer doesn't write this field. AVRO-1270 is on the reader side and has been open for a few years. Avro-1797 also references that default values don't work at ALL in C.

In the 'resolved-writer.c' source code - latest code on master branch - there are notes for the following:
'TODO: Handle default values!'

What's the process to get C default values supported. Is this something you would be willing to do, or is this something we should try and fix ourselves?

Reference from AVRO-1797

Douglas Creager added a comment - 11/Feb/16 15:03
On the C side we don't support default values at all yet; AVRO-1270 is the tracking bug for adding support for that.

Thanks!