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KAFKA-20020: Improve UUID nullability description in API readme #21212
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The UUIDFieldType class does NOT override canBeNullable(), so it inherits the default implementation which returns false. Uuid fields use a special zero uuid value (all bits set to 0) as a sentinel to represent "no UUID" instead of null. Signed-off-by: Federico Valeri <fedevaleri@gmail.com>
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The
UUIDFieldTypeclass does NOT overridecanBeNullable(), so it inherits the default implementation which returns false. Uuid fields use a special zero uuid value (all bits set to 0) as a sentinel to represent "no UUID" instead of null.