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https://issues.apache.org/jira/browse/KAFKA-4855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ewen Cheslack-Postava resolved KAFKA-4855.
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Resolution: Fixed
Fix Version/s: 0.11.0.0
Issue resolved by pull request 2732
[https://github.com/apache/kafka/pull/2732]
> Struct SchemaBuilder should not allow duplicate fields.
> -------------------------------------------------------
>
> Key: KAFKA-4855
> URL: https://issues.apache.org/jira/browse/KAFKA-4855
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 0.10.2.0
> Reporter: Jeremy Custenborder
> Assignee: Balint Molnar
> Labels: newbie
> Fix For: 0.11.0.0
>
>
> I would expect this to fail at the build() on schema. It actually makes it
> all the way to Struct.validate() and throws a cryptic error message. .field()
> should throw an exception if a field is already used.
> Repro:
> {code}
> @Test
> public void duplicateFields() {
> final Schema schema = SchemaBuilder.struct()
> .name("testing")
> .field("id", SchemaBuilder.string().doc("").build())
> .field("id", SchemaBuilder.string().doc("").build())
> .build();
> final Struct struct = new Struct(schema)
> .put("id", "testing");
> struct.validate();
> }
> {code}
> {code}
> org.apache.kafka.connect.errors.DataException: Invalid value: null used for
> required field at
> org.apache.kafka.connect.data.ConnectSchema.validateValue(ConnectSchema.java:212)
> at org.apache.kafka.connect.data.Struct.validate(Struct.java:232)
> at
> io.confluent.kafka.connect.jms.RecordConverterTest.duplicateFieldRepro(RecordConverterTest.java:289)
> {code}
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