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Posted to dev@avro.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2019/06/17 09:24:00 UTC

[jira] [Commented] (AVRO-2415) Regression: Schema evolution of union containing array fails in 1.9.0

    [ https://issues.apache.org/jira/browse/AVRO-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16865467#comment-16865467 ] 

ASF subversion and git services commented on AVRO-2415:
-------------------------------------------------------

Commit f6417e88b9973e932b8bad66fa6894d42c43c663 in avro's branch refs/heads/master from Martin Jubelgas
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=f6417e8 ]

AVRO-2415 - Union resolver regression when dealing with arrays (#537)




> Regression: Schema evolution of union containing array fails in 1.9.0
> ---------------------------------------------------------------------
>
>                 Key: AVRO-2415
>                 URL: https://issues.apache.org/jira/browse/AVRO-2415
>             Project: Apache Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.9.0
>            Reporter: Martin Jubelgas
>            Assignee: Martin Jubelgas
>            Priority: Major
>
> I've come across another example that does not resolve in 1.9.0 but did in 1.8.2:
> {code:java}
>   public void testArrayInUnion() throws Exception {
>     Schema writerSchema = SchemaBuilder.array().items().intType();
>     Schema readerSchema = SchemaBuilder.unionOf()
>                                  .nullType()
>                                  .and()
>                                  .array().items().intType().endUnion();
>     ResolvingDecoder.resolve(writerSchema, readerSchema );
>   }
> {code}
> results in just the same kind of exception (even with pull request #526 applied)
> {code:java}
> java.lang.ClassCastException: org.apache.avro.Resolver$ReaderUnion cannot be cast to org.apache.avro.Resolver$Container
>     at org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:95)
>     at org.apache.avro.io.parsing.ResolvingGrammarGenerator.generate(ResolvingGrammarGenerator.java:65)
>     at org.apache.avro.io.ResolvingDecoder.resolve(ResolvingDecoder.java:85)
> {code}



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