[jira] [Created] (FLINK-40441) Shade com.zaxxer (HikariCP) for pg pipeline connector to avoid cross-connector conflicts

["Zhuojun Jiang (Jira)" <ji...@apache.org>]

Zhuojun Jiang created FLINK-40441:
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             Summary: Shade com.zaxxer (HikariCP) for pg pipeline connector to avoid cross-connector conflicts
                 Key: FLINK-40441
                 URL: https://issues.apache.org/jira/browse/FLINK-40441
             Project: Flink
          Issue Type: Bug
          Components: Flink CDC
    Affects Versions: cdc-3.5.0, cdc-3.6.0, cdc-3.7.0
            Reporter: Zhuojun Jiang


Packaging com.zaxxer:HikariCP into the postgres pipeline connector without relocation can cause ClassLoader/class conflicts when multiple connectors are used together (HikariCP duplicated on classpath).

 

 Reproduction:
1. Build + package multiple connector modules that include HikariCP (e.g., mysql + postgres).
2. Run an application that loads both connectors — observe linkage/class conflicts at runtime.
  Root cause: pom.xml included com.zaxxer:HikariCP in the shade artifactSet but did not add a relocation for the com.zaxxer package. Other connectors already relocate HikariCP, leading to inconsistent namespaces and runtime conflicts.



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