MartijnVisser opened a new pull request, #29831:
URL: https://github.com/apache/flink/pull/29831
## What is the purpose of the change
Since FLINK-38912, flink-rpc-akka bundles a relocated Netty that duplicates
flink-shaded-netty. The RPC class loader loads `org.apache.flink` classes
component-first, so every JobManager and TaskManager loads about 4 MiB of Netty
classes twice. That pushes the heavy deployment test over its 64m metaspace
limit on Java 11 (FLINK-40788).
## Brief change log
- Make `netty-handler` and `netty-transport` test-scoped in flink-rpc-akka
again, as `netty-all` was before FLINK-38912
- Remove the Netty entries and notices from the module's NOTICE, the Netty
license files and the Netty shade filter
## Verifying this change
This change is already covered by existing tests, such as
`PekkoRpcSystemLoaderITCase` and `RpcSSLAuthITCase`, which pass on Java 11 and
17. On Java 11 the heavy deployment test's TaskManagers now peak at 54 MiB of
metaspace instead of 57 MiB, and the test passes at 64m again.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: yes
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
---
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Generated-by: Claude Code (Claude Opus 5.5)
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