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From "Zoltan Farkas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AVRO-1723) Add support for forward declarations in avro IDL
Date Wed, 16 Sep 2015 23:12:45 GMT

    [ https://issues.apache.org/jira/browse/AVRO-1723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14791276#comment-14791276
] 

Zoltan Farkas commented on AVRO-1723:
-------------------------------------

Doug, will gather the changes into a patch should be able to find some time in the next week
o,

If people are starting taking advantage of this they will hit: AVRO-1667

So it would be very important for AVRO-1667 to be resolved first... can somebody look into
1667, it has been sitting there for a while...


> Add support for forward declarations in avro IDL
> ------------------------------------------------
>
>                 Key: AVRO-1723
>                 URL: https://issues.apache.org/jira/browse/AVRO-1723
>             Project: Avro
>          Issue Type: Improvement
>    Affects Versions: 1.8.0
>            Reporter: Zoltan Farkas
>
> Currently Recursive data structures like:
> record SampleNode {
>    int count = 0;
>    array<SamplePair> samples = [];
> }
> record SamplePair {
>  string name;
>  SampleNode node;
> }
> It is not possible to declare in IDL,
> however it is possible to declare in avsc (with fix from https://issues.apache.org/jira/browse/AVRO-1667
)
> It is actually not complicated to implement, here is some detail on a possible implementation:
> https://github.com/zolyfarkas/avro/commit/210c50105717149f3daa39b8d4160b8548b8e363
> This would close a capability gap with google protocol buffers...



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