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https://issues.apache.org/jira/browse/AVRO-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Thiruvalluvan M. G. updated AVRO-1714:
--------------------------------------
Component/s: java
> Nullable Named Schema definition in IDL fails.
> ----------------------------------------------
>
> Key: AVRO-1714
> URL: https://issues.apache.org/jira/browse/AVRO-1714
> Project: Apache Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.7.6
> Reporter: Mark Perris
> Priority: Major
>
> According to Section 7.2 of the Avro IDL, named schemata may be treated as
> primitive types.
> As such, I believe it should be possible to create a nullable schema
> reference:
> {code}
> record coordinate {
> string type;
> }
> record tweet {
> union {null, coordinate} coordinate;
> }
> {code}
> to accommodate
> {code}
> {
> "coordinate":{
> "type":"point"
> }
> }
> {code} and {code}
> {
> "coordinate":null
> }
> {code}
> however, any attempt to store data against that schema results in
> {code}
> Exception in thread "main" org.apache.avro.AvroTypeException: Unknown union
> branch type
> at org.apache.avro.io.JsonDecoder.readIndex(JsonDecoder.java:445)
> at
> org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:290)
> at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
> at
> org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:267)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155)
> at
> org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193)
> at
> org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)
> at org.apache.avro.tool.DataFileWriteTool.run(DataFileWriteTool.java:99)
> at org.apache.avro.tool.Main.run(Main.java:85)
> at org.apache.avro.tool.Main.main(Main.java:74)
> {code}
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