[jira] [Created] (IMPALA-7898) LiteralExpr fails with class cast expression for some invalid DECIMAL values

["Paul Rogers (JIRA)" <ji...@apache.org>]

Paul Rogers created IMPALA-7898:
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             Summary: LiteralExpr fails with class cast expression for some invalid DECIMAL values
                 Key: IMPALA-7898
                 URL: https://issues.apache.org/jira/browse/IMPALA-7898
             Project: IMPALA
          Issue Type: Bug
          Components: Frontend
    Affects Versions: Impala 3.0
            Reporter: Paul Rogers
            Assignee: Paul Rogers


Suppose that we run this simple test:

{code:java}
LiteralExpr.create("123.1", ScalarType.createDecimalType(4, 2));
{code}

This method calls {{NumericLiteral.uncheckedCastTo()}} which will return a {{CastExpr}}. The code then casts this to a {{LiteralExpr}}, which will fail with a runtime {{ClassCastException}}.

We should provide a clearer error message such as explaining that the value is invalid for the given type rather than just throwing a seemingly-unrelated exception.




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