Unable to upgrade with newer Jackson - conflicting `com.fasterxml.jackson.annotation.JsonFormat`

[aleskiewicz]

Since release 1.1.3 , there is a risk of conflict with jackson-annotations jar. PR #445 has changed shading rules for selected list of Jackson annotations and now, some are exposed under original package name (see attached image).

In our case, after upgrade to version 1.1.3 the app fails to start, because of missing com.fasterxml.jackson.annotation.JsonFormat.Feature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE. This feature switch is available since Jackson 2.15 . We are using Jackson 2.15.2. Workaround for this issue is to include jackson-annotations before the aws-lambda-java-serialization dependency, so classloader first loads updated Jackson classes, but that's not the ideal way

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-lambda-java-serialization</artifactId>
            <version>1.1.3</version>
        </dependency>

[smirnoal]

thanks for reporting. Please use previous version of the library while the development team is working on the fix

[mo7ty]

Hi!
Sorry to ask, might be a silly question, but why is Jackson shaded in aws-lambda-java-serialization?
Why not use it just as a dependency?

[smirnoal]

there are no silly questions. all 3rd party deps in libraries are relocated to not clash with customers dependencies

[smirnoal]

1.1.4 has been released, which solves this issue, resolving

[aleskiewicz]

Now just a new base lambda image and ready to test on production ;)

Thanks!

[hamidehsani54]

Run
./gradlew dependencies

Make sure that all the jackson dependencies are same.
If not modify it so that all dependencies looks the same. This version worked: 2.13.3