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Posted to dev@avro.apache.org by "Ryan Skraba (Jira)" <ji...@apache.org> on 2022/06/24 15:15:00 UTC
[jira] [Resolved] (AVRO-3374) [Java] Fully qualified type reference "ns.int" loses namespace.
[ https://issues.apache.org/jira/browse/AVRO-3374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ryan Skraba resolved AVRO-3374.
-------------------------------
Fix Version/s: 1.11.1
(was: 1.12.0)
Resolution: Fixed
Cherry-picked to [branch-1.11|https://github.com/apache/avro/commit/ea3eb118e80e0cc66964963bea721c0e487990be].
I think that the edge case is really rare, so this merits being in the minor release: I can't see anyone expected this to fail because of the spec, and breaking because it suddenly succeeds.
> [Java] Fully qualified type reference "ns.int" loses namespace.
> ---------------------------------------------------------------
>
> Key: AVRO-3374
> URL: https://issues.apache.org/jira/browse/AVRO-3374
> Project: Apache Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.11.0
> Reporter: Ryan Skraba
> Assignee: Christophe Le Saec
> Priority: Minor
> Labels: pull-request-available, pull-requests-available
> Fix For: 1.11.1
>
> Attachments: AVRO-3374.patch
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> While brainstorming for AVRO-3370, I came across this special case where a type-reference could be considered ambiguous if the SDK is not careful when simplifying inherited namespaces:
> {code:json}
> {
> "type" : "record",
> "name" : "ns.int",
> "fields" : [
> {"name" : "value", "type" : "int"},
> {"name" : "next", "type" : [ "null", "ns.int" ]}
> ]
> }
> {code}
> In Java, if this code is parsed, it works as expected (as a linked list).
> If the schema is turned to a String using toString(), the namespace is dropped off the last {*}{{ns.int}}{*}, turning it into the primitive. That string can still be parsed into a Schema, but the "round-trip" modifies the schema in an incompatible way.
> That namespace shouldn't be dropped when producing the JSON string representing the Schema in Java.
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