[jira] [Created] (AVRO-1544) Union of enum and null can result in NPE on validate if null is not first

[Matthew Hayes (JIRA)]

Matthew Hayes created AVRO-1544:
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             Summary: Union of enum and null can result in NPE on validate if 
null is not first
                 Key: AVRO-1544
                 URL: https://issues.apache.org/jira/browse/AVRO-1544
             Project: Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.7.6
            Reporter: Matthew Hayes


The ENUM case in validate is missing a null check for datum:

{code}
    case ENUM:
      return schema.getEnumSymbols().contains(datum.toString());
{code}

This leads to a surprising error where a NPE is thrown for a union of enum and 
null when the enum is first in the union.  If null is first it works.  The fix 
is a simple.  I'm creating a patch that adds the fix and a unit test for this 
case.



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