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https://issues.apache.org/jira/browse/AVRO-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693976#comment-14693976
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Lukas Steiblys commented on AVRO-1582:
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We ran into the same issue when encoding JSON data. This was not a problem with
the Python AVRO implementation so we only ran into this when switching to
Java/Scala. Our plan is to use [~zolyfarkas] implementation until this can be
merged into the main repo since we aren't planning to change our JSON format
and add AVRO coupling.
> Json serialization of nullable fileds and fields with default values
> improvement.
> ---------------------------------------------------------------------------------
>
> Key: AVRO-1582
> URL: https://issues.apache.org/jira/browse/AVRO-1582
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.8.0
> Reporter: Zoltan Farkas
> Priority: Minor
> Attachments: AVRO-1582-PATCH
>
>
> Currently serializing a nullable field of type union like:
> "type" : ["null","some type"]
> when serialized as JSON results in:
> "field":{"some type":"value"}
> when it could be:
> "field":"value"
> Also fields that equal the the default value can be omitted from the
> serialized data. This is possible because the reader will have the writer's
> schema and can infer the field values. This reduces the size of the json
> messages.
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