[jira] [Commented] (FLINK-39640) Bump Flink 1.20.0 to 1.20.3 and upgrade maven-shade-plugin to 3.6.0

["Martijn Visser (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-39640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18123279#comment-18123279 ] 

Martijn Visser commented on FLINK-39640:
----------------------------------------

Still failing on every weekly, most recently https://github.com/apache/flink-connector-hive/actions/runs/37167912172/job/111334654573 (2026-10-04). All 19 weekly runs since 2026-06-04 are red. Note that main has been on 2.0-preview1 since May (pom and push_pr.yml), while weekly.yml still builds main with -Dflink.version=1.20.0 on JDK 8 and 11.

> Bump Flink 1.20.0 to 1.20.3 and upgrade maven-shade-plugin to 3.6.0
> -------------------------------------------------------------------
>
>                 Key: FLINK-39640
>                 URL: https://issues.apache.org/jira/browse/FLINK-39640
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Hive
>    Affects Versions: 3.0.0
>            Reporter: Jayesh Lalwani
>            Priority: Major
>              Labels: pull-request-available
>
> The Flink Hive connector CI is broken because flink-1.20.0-bin-scala_2.12.tgz has been removed from Apache's download mirrors (Apache only hosts the latest patch release per minor version). This prevents CI from running end-to-end tests.
> Bumping to Flink 1.20.3 fixes the binary download but introduces a transitive dependency change: flink-parquet:1.20.3 pulls in parquet-hadoop:1.15.2 (up from 1.13.1 in 1.20.0). The parquet 1.15.x line includes multi-release JAR entries with Java 17 and Java 22 class files under META-INF/versions/. The current maven-shade-plugin:3.2.4 (inherited from flink-connector-parent) cannot process these entries, failing with:
> {code}
> Unsupported class file major version 61
> {code}
> Fix:
> 1. Bump flink.version from 1.20.0 to 1.20.3
> 2. Override maven-shade-plugin version to 3.6.0 (supports multi-release JARs)
> 3. Update CI workflow to download flink-1.20.3 binary



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