[jira] [Created] (AVRO-3146) Test scale validation when encoding decimal logical schema

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[jira] [Created] (AVRO-3146) Test scale validation when encoding decimal logical schema

Dave Cole (Jira)
Michael A. Smith created AVRO-3146:
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             Summary: Test scale validation when encoding decimal logical schema
                 Key: AVRO-3146
                 URL: https://issues.apache.org/jira/browse/AVRO-3146
             Project: Apache Avro
          Issue Type: Test
          Components: python
    Affects Versions: 1.10.2
            Reporter: Michael A. Smith


Based on [a CodeQL finding|https://github.com/apache/avro/security/code-scanning/464], it seems decimal logical types are probably broken and need testing with various encoding and decoding steps. I think:

1. Python decimal exponents are always negative, and avro schema scales are always positive, so the {{if exp > scale: raise}} check does not raise an exception.
2. If it did, it would raise the wrong exception, because it would fail to instantiate the exception class.



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