[jira] [Commented] (SPARK-29243) hadoop-3.x profiles should use hadoop shaded client jars

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-29243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937662#comment-16937662 ] 

Dongjoon Hyun commented on SPARK-29243:
---------------------------------------

Thank you for filing a JIRA. This is a nice-to-have.

> hadoop-3.x profiles should use hadoop shaded client jars
> --------------------------------------------------------
>
>                 Key: SPARK-29243
>                 URL: https://issues.apache.org/jira/browse/SPARK-29243
>             Project: Spark
>          Issue Type: Improvement
>          Components: Build
>    Affects Versions: 3.0.0
>            Reporter: Terry Moschou
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Hadoop 3 introduces shaded client jars.
> The {{hadoop-client}} Maven artifact available in 2.x releases pulls Hadoop’s transitive dependencies onto a Hadoop application’s classpath. This can be problematic if the versions of these transitive dependencies conflict with the versions used by the application (or spark)
> HADOOP-11804 adds new {{hadoop-client-api}} and {{hadoop-client-runtime}} artifacts that shade Hadoop’s dependencies into a single jar. This avoids leaking Hadoop’s dependencies onto the application’s classpath.
> Spark 3 should make use of these artifacts



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