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https://issues.apache.org/jira/browse/AVRO-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16167839#comment-16167839
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Sean Busbey commented on AVRO-2019:
-----------------------------------

Given the docs on logical types elsewhere, I think it's worth calling out this 
particular use of annotations in IDL. Folks who rely on IDL to use Avro 
shouldn't have to know the implementation details of how logical types are 
implemented via properties so that they can reason out how to use them in IDL.

> Improve documentation for logical type annotations in IDL
> ---------------------------------------------------------
>
>                 Key: AVRO-2019
>                 URL: https://issues.apache.org/jira/browse/AVRO-2019
>             Project: Avro
>          Issue Type: Improvement
>          Components: doc, logical types
>            Reporter: Andrew Rosca
>            Priority: Minor
>         Attachments: AVRO-2019.patch
>
>
> The IDL documentation lacks information for how annotations can be specified 
> for logical types, like in the following example:
> {code}
> protocol test {
>     record test {
>         @logicalType("timestamp-millis")
>         long time;
>     }
> }
> {code}



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