[HIVE-805] Session level metastore

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.6.0
• Component/s: Query Processor
• Assignee: Ashish Thusoo
• Reporter: Ashish Thusoo
• Created: 27/Aug/09 02:01
• Updated: 04/Feb/10 06:40

Description

Implement a shadow metastore that is in memory and runs for a session. This can contain definitions for session specific views that can be used to implement data flow variables in Hive. It can also be used for testing scripts. First we will support the later use case where in all the DDL statements in the session create objects in the session metastore and all the queries are converted to explain internal. Any thoughts on load commands?

This feature is enabled when

set hive.session.test = true

is done in the session.

Issue Links

• is blocked by: HIVE-584 Clean up global and ThreadLocal variables in Hive