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From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-573) Avro union in cogroup doesn't check for nested unions
Date Fri, 16 Oct 2015 18:54:05 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14961200#comment-14961200
] 

Josh Wills commented on CRUNCH-573:
-----------------------------------

I think that automatically "flattening" the union types inside of Avros.unionOf is the way
to go, i.e., a unionOf(union1, union2) -> union of the composite types inside of union1
and union2. I don't see an obvious issue with that off the top of my head; does anyone else?

> Avro union in cogroup doesn't check for nested unions
> -----------------------------------------------------
>
>                 Key: CRUNCH-573
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-573
>             Project: Crunch
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: Adric Eckstein
>
> If one of the Cogroup.cogroup() inputs PType is an avro union, the cogroup() method attempts
to construct a union of the input PTypes, which throws a Avro RuntimeException for a nested
union.  This is similar to CRUNCH-547.
> The bug could be fixed by either modifying the Avros.unionOf() method to check for union
input types, or by unnesting the types in cogroup() prior to constructing the avro union.



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