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Posted to dev@avro.apache.org by "Ryan Skraba (Jira)" <ji...@apache.org> on 2022/01/03 11:06:00 UTC

[jira] [Commented] (AVRO-3279) How many fields one can have in record?

    [ https://issues.apache.org/jira/browse/AVRO-3279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17467930#comment-17467930 ] 

Ryan Skraba commented on AVRO-3279:
-----------------------------------

Hello!  In my opinion, empty records are fine, but can have unintended consequences.  We actually ran into this situation once: reading infinitely many zero-length records out of a zero-length buffer.

I'm not sure what the right thing to do would be for that case, except to avoid using top-level schemas that exclusively serialize to zero bytes.

> How many fields one can have in record?
> ---------------------------------------
>
>                 Key: AVRO-3279
>                 URL: https://issues.apache.org/jira/browse/AVRO-3279
>             Project: Apache Avro
>          Issue Type: Bug
>          Components: spec
>            Reporter: Askar Safin
>            Priority: Major
>
> The specification doesn't say how many fields one can have in a record, i. e. what is minimal count of fields. I think minimal count should be zero, because many programming languages allow empty records.
>  
> In my homegrown Rust Avro lib I allow empty records, because they are perfectly compatible with Rust type system



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