[LENS-298] Provide a way to add static jars at db level

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1
• Component/s: cube, server
• Assignee: Jaideep Dhok
• Reporter: Amareshwari Sriramadasu
• Created: 09/Feb/15 13:14
• Updated: 27/Apr/15 09:06
• Resolved: 27/Apr/15 09:06

Description

Static cube related jars can be loaded in system classpath of lens whenever a cube/db is accessed. These jars would be the jars required to load serde, storage of the underlying tables in db. Right now, these are getting loaded are session auxiliary jars, we need to separate session auxiliary jars with cube related jars.

This however need to be done as an extension where it should be possible to drop jars in some ext/ folder and they are considered, as opposed to bundling this as part of the lens system.

System should degrade to requiring the jars in session, if the required jars are missing in ext/

Issue Links

• relates to: LENS-336 Add all aux jars in one go

Sub-Tasks

• Pass database specific jars to Hive driver lazily: Closed
• Load database specific jars from configurable location: Closed
• set current database call should refresh session class loader: Closed
• Hive driver jars should get refreshed with db switches: Closed
• Jar addition/removal for Hive should not affect non-hive queries: Closed