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https://issues.apache.org/jira/browse/FLINK-13996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17274473#comment-17274473
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Robert Metzger commented on FLINK-13996:
----------------------------------------
Improved in
https://github.com/apache/flink/commit/0daa8de738aec00f30cdcb8079a901fd555af293.
> Maven instructions for 3.3+ do not cover all shading special cases
> ------------------------------------------------------------------
>
> Key: FLINK-13996
> URL: https://issues.apache.org/jira/browse/FLINK-13996
> Project: Flink
> Issue Type: Improvement
> Components: Build System, Documentation
> Affects Versions: 1.8.0
> Reporter: Chesnay Schepler
> Assignee: Robert Metzger
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> When building Flink on Maven 3.3+ extra care must be taken to ensure that the
> shading works as expected. Since 3.3 the dependency graph is immutable, as a
> result of which downstream modules (like flink-dist) see the unaltered set of
> dependencies of bundled modules; regardless of these were bundled or not. As
> a result dependencies may be bundled multiple times (original and relocated
> versions).
> The [instructions for building Flink with Maven
> 3.3+|https://ci.apache.org/projects/flink/flink-docs-master/flinkDev/building.html#dependency-shading]
> correctly point out that flink-dist must be built separately, however (at
> the very least) all filesystems relying on {{flink-fs-hadoop-shaded}} are
> also affected.
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