[1.56.0] Lots of AWS Java sdk related intellisense is broken #4500

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1. tokidoki11

   added

   bug

   on Sep 5, 2026
2. wenytang-ms commented on Sep 7, 2026

   

   wenytang-ms

   on Sep 7, 2026

   Last edited by wenytang-ms

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   @tokidoki11 Thanks for reporting this.

   I tried to reproduce the issue with the code shown in the screenshots, using both the JDT Core compiler bundled with vscode-java 1.55.0 and the one bundled with 1.56.0. I also tested with AWS SDK for Java versions 2.32.32 and 2.54.13, but the code compiled successfully in all cases.

   Please provide a minimal reproducible project? If that is not possible, the following information would help:

   1. The exact AWS SDK version and your Maven/Gradle dependency tree.
   2. Whether the project compiles successfully with mvn compile or gradle compileJava.
   3. Whether the problem remains after running Java: Clean Java Language Server Workspace.
   4. The Java Language Server log, available through Java: Open Java Language Server Log File.

   As an additional test, please check whether the error still occurs after extracting the request into an explicitly typed local variable?

   GetParametersByPathRequest request = GetParametersByPathRequest.builder()
       .path(parameterPrefix)
       .withDecryption(true)
       .recursive(false)
       .build();
   
   GetParametersByPathIterable paginator =
       ssmClient.getParametersByPathPaginator(request);

   This would help determine whether the problem is specifically caused by type inference for the chained builder expression. The screenshot suggests that the request expression may be incorrectly inferred as the parent type SsmRequest, but we need a reproducible project or the dependency details to determine whether this is a JDT Core regression or a project-import/classpath issue.

   👀React with 👀1Reacted by Han Sen
3. tokidoki11 commented on Sep 7, 2026

   

   tokidoki11

   on Sep 7, 2026

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   Thanks for responding for the issue im facing

   I think reproducing with my current project size is quite difficult. I wonder if this would be enough

   1. software.amazon.awssdk:ssm:2.42.26
   2. compilejava via gradle is fine
   3. Tried on the 1.56.0 still happens, 1.55.0 is fine as state
   4. Here is the sanitized log Class name : ParameterStoreConfig

   sanitized-log.txt

   Separating as a variable is still showing error
   

   👍React with 👍1Reacted by wenyt
4. wenytang-ms commented on Sep 8, 2026

   

   wenytang-ms

   on Sep 8, 2026

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   I can repro such issue, and submit the fix pr into jdt.core
   eclipse-jdt/eclipse.jdt.core#5373

   ❤️React with ❤️1Reacted by Han Sen
5. stephan-herrmann

   added 2 commits that reference this issue on Sep 29, 2026

   Preserve covariant return types when merging null annotations

   ...

   a019492

   Preserve covariant return types when merging null annotations (#5373)

   ...

   abba700