Analysis

Looking at the similar fixes, there's a clear pattern: all three cases involved Netty dependency issues that were resolved by updating the Netty version in properties files. In Fix Examples #0 and #1, the netty4.version was updated from 4.1.118.Final to 4.1.127.Final in hadoop-project-pombump-properties.yaml, and some specific Netty codec dependencies were removed from pombump-deps.yaml. In Fix Example #2, the netty.version was updated from 4.1.124.Final to 4.1.125.Final in pombump-properties.yaml. The common solution is updating Netty to a newer version that contains the required HTTP codec classes.

Explanation

The build is failing because the io.netty.handler.codec.http package is not available, even though netty-handler-4.1.125.Final.jar was downloaded. This indicates a version compatibility issue where the current Netty version doesn't include the required HTTP codec classes or they're in a separate artifact. Based on the similar fixes, updating to Netty 4.1.127.Final should resolve this issue because: 1) This version has been proven to work in similar Hadoop-related projects with the same error, 2) The HTTP codec classes are properly included in this version, 3) The pombump mechanism will ensure all Netty dependencies are consistently updated to this version across the project. The netty-codec-http artifact specifically contains the io.netty.handler.codec.http package that TezBodyDeferringAsyncHandler is trying to import.

Alternative Approaches

• Add netty-all dependency instead of individual Netty artifacts to ensure all required packages are available
• Use a different Netty version like 4.1.125.Final but explicitly include the netty-codec-http artifact
• Update the Tez source code to use a different HTTP client library if Netty dependencies continue to be problematic