software.amazon.awssdk.services.dynamodb.model.AttributeValue implements Serializable, but errors on serialization

[ryucc]

Describe the bug

java.io.NotSerializableException: software.amazon.awssdk.core.util.DefaultSdkAutoConstructList

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

There should be no errors when serializing software.amazon.awssdk.services.dynamodb.model.AttributeValue

Current Behavior

Exception is thrown.
java.io.NotSerializableException: software.amazon.awssdk.core.util.DefaultSdkAutoConstructList

Reproduction Steps

'''
public String serialize(Serializable object) throws SerializationException {
try (ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream objectOutputStream = new ObjectOutputStream(
baos)) {
objectOutputStream.writeObject(object);
objectOutputStream.flush();
return encoder.encodeToString(baos.toByteArray());
} catch (IOException e) {
throw new SerializationException(e);
}
}
void test(AttributeValue av) {
serialize(av);
}
'''

Possible Solution

No response

Additional Information/Context

No response

AWS Java SDK version used

2.30.31

JDK version used

1.8

Operating System and version

Mac OS

[bhoradc]

Hi @ryucc,

Thanks for reporting the issue. The problem you are experiencing seems to be related to #3143.

This issue addresses the fact that AttributeValue in AWS SDK for Java v2 is not serializable. Therefore, attempting to serialize an AttributeValueobject would result in a NotSerializableException due to internal components like DefaultSdkAutoConstructList not implementing the Serializable interface.

I would request that you leave a thumbs-up reaction to the mentioned feature request. This action would assist us in determining the appropriate prioritization for addressing it. In the interim, the recommended workaround is to convert the AttributeValue to a serializable format prior to the serialization process.

Regards,
Chaitanya