[jira] [Created] (AVRO-1861) Avro Schema parser treats Avro float type as Java Double for default values

["Andy Mok (JIRA)" <ji...@apache.org>]

Andy Mok created AVRO-1861:
------------------------------

             Summary: Avro Schema parser treats Avro float type as Java Double for default values
                 Key: AVRO-1861
                 URL: https://issues.apache.org/jira/browse/AVRO-1861
             Project: Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.8.1
            Reporter: Andy Mok


The following code snippet in the [Schema class|https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/Schema.java] shows that we explicitly treat Avro {{FLOAT}} and {{DOUBLE}} as a Java {{Double}}.
{code:java}
if (defaultValue != null
    && (Type.FLOAT.equals(fieldSchema.getType())
        || Type.DOUBLE.equals(fieldSchema.getType()))
    && defaultValue.isTextual())
  defaultValue =
    new DoubleNode(Double.valueOf(defaultValue.getTextValue()));
{code}

This is a problem when someone calls [Schema.Field#defaultVal|https://avro.apache.org/docs/1.8.1/api/java/org/apache/avro/Schema.Field.html#defaultVal()] for an Avro field with Avro type {{FLOAT}} and they try to typecast the object to a Java {{float}}.




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