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@renovate-bot renovate-bot commented Dec 16, 2025

This PR contains the following updates:

Package Change Age Confidence
io.netty:netty-transport-native-epoll (source) 4.2.8.Final β†’ 4.2.9.Final age confidence

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@renovate-bot renovate-bot requested a review from a team as a code owner December 16, 2025 01:55
@trusted-contributions-gcf trusted-contributions-gcf bot added the kokoro:force-run Add this label to force Kokoro to re-run the tests. label Dec 16, 2025
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Summary of Changes

Hello @renovate-bot, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request performs a routine dependency update for the io.netty:netty-transport-native-epoll library. This minor version bump aims to incorporate the latest bug fixes, performance enhancements, or security patches from the upstream Netty project, ensuring the project benefits from the most current stable release of this network transport component.

Highlights

  • Dependency Update: The io.netty:netty-transport-native-epoll dependency has been updated from version 4.2.8.Final to 4.2.9.Final.
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Code Review

This automated pull request updates the io.netty:netty-transport-native-epoll dependency. My review found a significant issue with how this dependency is managed. The pom.xml explicitly pins a very old version of Netty, overriding the much newer version managed by the grpc-bom. This creates a risk of runtime errors and security vulnerabilities. I've provided a critical review comment with a suggestion to remove the explicit version pin and let the BOM manage the dependency, which will improve the project's stability and security.

Comment on lines 64 to 68
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-transport-native-epoll</artifactId>
<version>4.2.8.Final</version>
<version>4.2.9.Final</version>
</dependency>
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critical

This pull request updates netty-transport-native-epoll to version 4.2.9.Final. However, this version appears to be very old (from ~2017) and is being explicitly defined, which overrides the version managed by the grpc-bom. The grpc-bom (version 1.77.0) in your dependencyManagement section manages Netty 4.1.112.Final, which is much more recent and secure.

Pinning an old version of a critical networking library like Netty can cause several problems:

  • Runtime Instability: Mismatched versions between gRPC and Netty can lead to subtle bugs or runtime errors like NoSuchMethodError.
  • Security Risks: Old library versions often contain known security vulnerabilities that have been patched in newer releases.

To resolve this and improve dependency management, it's best to let the grpc-bom control the Netty version. This ensures compatibility across your gRPC dependencies.

I recommend removing the explicit <version> tag for this dependency and letting the BOM manage it.

    <dependency>
      <groupId>io.netty</groupId>
      <artifactId>netty-transport-native-epoll</artifactId>
    </dependency>

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