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https://issues.apache.org/jira/browse/SPARK-17319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15450094#comment-15450094
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Apache Spark commented on SPARK-17319:
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User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/14883
> Move addJar from HiveSessionState to HiveExternalCatalog
> --------------------------------------------------------
>
> Key: SPARK-17319
> URL: https://issues.apache.org/jira/browse/SPARK-17319
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Xiao Li
>
> This is another step to remove Hive client usage in `HiveSessionState`.
> Different sessions are sharing the same class loader, and thus,
> `metadataHive.addJar(path)` basically loads the JARs for all the sessions.
> Thus, no impact is made if we move `addJar` from `HiveSessionState` to
> `HiveExternalCatalog`.
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