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https://issues.apache.org/jira/browse/KAFKA-16288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Greg Harris resolved KAFKA-16288.
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Fix Version/s: 3.8.0
Resolution: Fixed
> Values.convertToDecimal throws ClassCastExceptions on String inputs
> -------------------------------------------------------------------
>
> Key: KAFKA-16288
> URL: https://issues.apache.org/jira/browse/KAFKA-16288
> Project: Kafka
> Issue Type: Bug
> Components: connect
> Affects Versions: 1.1.0
> Reporter: Greg Harris
> Assignee: Greg Harris
> Priority: Minor
> Fix For: 3.8.0
>
>
> The convertToDecimal function does a best-effort conversion of an arbitrary
> Object to a BigDecimal. Generally when a conversion cannot take place (such
> as when an unknown subclass is passed-in) the function throws a
> DataException. However, specifically for String inputs with valid number
> within, a ClassCastException is thrown.
> This is because there is an extra "doubleValue" call in the implementation:
> [https://github.com/apache/kafka/blob/ead2431c37ace9255df88ffe819bb905311af088/connect/api/src/main/java/org/apache/kafka/connect/data/Values.java#L427]
> which immediately causes a ClassCastException in the caller:
> [https://github.com/apache/kafka/blob/ead2431c37ace9255df88ffe819bb905311af088/connect/api/src/main/java/org/apache/kafka/connect/data/Values.java#L305]
>
> This appears accidental, because the case for String is explicitly handled,
> it just behaves poorly. Instead of the ClassCastException, the number should
> be parsed correctly.
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