[jira] [Closed] (FLINK-14905) Unify packaging process

["Chesnay Schepler (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler closed FLINK-14905.
------------------------------------
    Resolution: Fixed

master: 4ba834df6a0fea543caeb1679bc0206b454e0c60

> Unify packaging process
> -----------------------
>
>                 Key: FLINK-14905
>                 URL: https://issues.apache.org/jira/browse/FLINK-14905
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Build System
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.10.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Right now we have a Java 11 profile for customizing the build in various ways, from bumping plugins, setting compiler flags, disabling tests and even some dependencies.
> The dependencies bit a problematic since it implies that not all jars created by the Java 8 build process can actually run on Java 11.
> This creates an unnecessary burden for users who want to use Java 11 (reminder: the only supported LTS version) as they'd have to compile Flink themselves for Java 11.
> Releasing a second set of jars/binaries is out of the question due to the confusion and overhead this would cause, so instead we should ensure that the Java 8 jars are usable on Java 11.
> My proposal is to use a multi-release jar to package additional dependencies that are only loaded on Java 11.
> I have verified that this approach works conceptually, whether it works with the dependency we have to deal with (jaxb-api) remains to be seen.



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