[SPARK-17319] Move addJar from HiveSessionState to HiveSharedState

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 2.1.0
• Component/s: SQL
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Xiao Li
• Created: 30/Aug/16 20:39
• Updated: 21/May/19 04:35
• Resolved: 21/May/19 04:35

Description

aThe added jar is shared by all the sessions, because SparkContext does not support sessions. Thus, it makes more sense to move addJar from `HiveSessionState` to `HiveSharedState`

This is also 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`.

Issue Links

• links to: [Github] Pull Request #14883 (gatorsmile)