Darshan Mehta created AVRO-2107:
-----------------------------------
Summary: Unable to deserialize JSON with array type to
GenericRecord
Key: AVRO-2107
URL: https://issues.apache.org/jira/browse/AVRO-2107
Project: Avro
Issue Type: Bug
Affects Versions: 1.8.2, 1.8.1
Reporter: Darshan Mehta
I am trying to deserialise the json with array type into GenericRecord and I
get the following exception:
{code:java}
Exception in thread "main" org.apache.avro.AvroTypeException: Unknown union
branch sampleArrayRecordString
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.readWithoutConversion(GenericDatumReader.java:179)
at
org.apache.avro.generic.GenericDatumReader.readArray(GenericDatumReader.java:266)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:177)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:232)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:222)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:175)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:179)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:232)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:222)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:175)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:145)
at a.b.c.d.Test2.main(Test2.java:19)
{code}
Below is the code:
{code:java}
final Schema schema = Schema.parse(new File(
"<schema_file_path>"));
byte[] payload = Files.readAllBytes(Paths.get(
"<json_file_path>"));
GenericRecord record = new
GenericDatumReader<GenericRecord>(schema).read(null,
DecoderFactory.get().jsonDecoder(schema, new
String(payload)));
System.out.println(record);
{code}
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