[AVRO-2072] ResolvingGrammarGenerator doesn't implement schema resolution correctly for unions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.7, 1.8.1
• Fix Version/s: 1.9.0
• Component/s: java
• Hadoop Flags: Incompatible change, Reviewed
• Release Note: However, schema resolution is now working according to spec it is a backward incompatible change in the behaviour that int is promotable to float (in addition to long and double) and log to float (in addition to double) when used in unions.
• Assignee: Nándor Kollár
• Reporter: Nándor Kollár
• Created: 30/Aug/17 12:36
• Updated: 12/Sep/17 11:36
• Resolved: 12/Sep/17 11:36

Description

According to specification, int and long is promotable to float, but when using SchemaValidator, a union with a single int or long branch is not readable by an union with a float branch.

Issue Links

• is related to: AVRO-1933 SchemaCompatibility class could be more user-friendly about incompatibilities