[jira] [Created] (AVRO-3654) BigDecimal not supported in GenericData.getSchemaName() method

["Emmanuel Brard (Jira)" <ji...@apache.org>]

Emmanuel Brard created AVRO-3654:
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             Summary: BigDecimal not supported in GenericData.getSchemaName() method
                 Key: AVRO-3654
                 URL: https://issues.apache.org/jira/browse/AVRO-3654
             Project: Apache Avro
          Issue Type: Improvement
          Components: java
    Affects Versions: 1.11.1
            Reporter: Emmanuel Brard


When trying to add a `GenericRecord` in a Java set, the hashcode computation code is called.

If a Union contains a decimal logical type which is mapped with a `BigDecimal` in Java, the call to `add` will fail with:

{code}
Caused by: org.apache.avro.AvroRuntimeException: Unknown datum type java.math.BigDecimal: 4042030.00
	at org.apache.avro.generic.GenericData.getSchemaName(GenericData.java:933)
	at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:892)
	at org.apache.avro.generic.GenericData.hashCode(GenericData.java:1113)
	at org.apache.avro.generic.GenericData.hashCodeAdd(GenericData.java:1127)
	at org.apache.avro.generic.GenericData.hashCode(GenericData.java:1103)
	at org.apache.avro.generic.GenericData.hashCode(GenericData.java:1113)
	at org.apache.avro.generic.GenericData.hashCodeAdd(GenericData.java:1127)
	at org.apache.avro.generic.GenericData.hashCode(GenericData.java:1103)
	at org.apache.avro.generic.GenericData$Record.hashCode(GenericData.java:292)
	at java.base/java.util.HashMap.hash(HashMap.java:338)
	at java.base/java.util.HashMap.put(HashMap.java:610)
	at java.base/java.util.HashSet.add(HashSet.java:221)
{code}

The method `getSchemaName` does not handle the BigDecimal Java type, which is used by the `DecimalConversion`.



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