[jira] [Commented] (HIVE-26220) Shade & relocate dependencies in hive-exec to avoid conflicting with downstream projects

["Zoltan Haindrich (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-26220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17534713#comment-17534713 ] 

Zoltan Haindrich commented on HIVE-26220:
-----------------------------------------

[~csun] have you tried using the current hive-exec from master? 
the shading was improved some time ago; especially in HIVE-22126.

Probably the best would be to provide some usecases for the usage of the artifact - preferably with testcases; so that we don't break it again in the future...but I admit - this might not be a good ask...

Correct me if I'm wrong but it sounds a bit unfair to push the task of evaluating and upgrading other projects to run with the next version - just because they might upgrade to it (in my mind fixing this blocker task would mean that).

So I think the best middle ground could be to provide support for projects which do "their part" first - and they could link some development branches which is already using an 4.0.0-alpha-X release.

> Shade & relocate dependencies in hive-exec to avoid conflicting with downstream projects
> ----------------------------------------------------------------------------------------
>
>                 Key: HIVE-26220
>                 URL: https://issues.apache.org/jira/browse/HIVE-26220
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 4.0.0
>            Reporter: Chao Sun
>            Priority: Blocker
>
> Currently projects like Spark, Trino/Presto, Iceberg, etc, are depending on {{hive-exec:core}} which was removed in HIVE-25531. The reason these projects use {{hive-exec:core}} is because they have the flexibility to exclude, shade & relocate dependencies in {{hive-exec}} that conflict with the ones they brought in by themselves. However, with {{hive-exec}} this is no longer possible, since it is a fat jar that shade those dependencies but do not relocate many of them.
> In order for the downstream projects to consume {{hive-exec}}, we will need to make sure all the dependencies in {{hive-exec}} are properly shaded and relocated, so they won't cause conflicts with those from the downstream.



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