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https://issues.apache.org/jira/browse/AVRO-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17185858#comment-17185858
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Jorge Machado commented on AVRO-1582:
-------------------------------------
I think I'm hitting similar things with avro 1.10.
{code:java}
Exception in thread "main" org.apache.avro.AvroTypeException: Expected long.
Got VALUE_STRINGException in thread "main" org.apache.avro.AvroTypeException:
Expected long. Got VALUE_STRING at
org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:511) at
org.apache.avro.io.JsonDecoder.readLong(JsonDecoder.java:177) at
org.apache.avro.io.ResolvingDecoder.readLong(ResolvingDecoder.java:169) at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:197)
at
org.apache.avro.specific.SpecificDatumReader.readField(SpecificDatumReader.java:136)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:247)
at
org.apache.avro.specific.SpecificDatumReader.readRecord(SpecificDatumReader.java:123)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:179)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:160) at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
{code}
> Json serialization of nullable fileds and fields with default values
> improvement.
> ---------------------------------------------------------------------------------
>
> Key: AVRO-1582
> URL: https://issues.apache.org/jira/browse/AVRO-1582
> Project: Apache Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.8.0
> Reporter: Zoltan Farkas
> Priority: Major
> 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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