[HIVE-6959] Enable Constant propagation optimizer for Hive Vectorization

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.14.0
• Fix Version/s: 0.14.0
• Component/s: Vectorization
• Assignee: Hari Sankar Sivarama Subramaniyan
• Reporter: Hari Sankar Sivarama Subramaniyan
• Created: 22/Apr/14 22:27
• Updated: 13/Nov/14 19:43
• Resolved: 11/Aug/14 02:58

Description

HIVE-5771 covers Constant propagation optimizer for Hive. Now that HIVE-5771 is committed, we should remove any vectorization related code which duplicates this feature. For example, a fn to be cleaned is VectorizarionContext::foldConstantsForUnaryExprs(). In addition to this change, constant propagation should kick in when vectorization is enabled. i.e. we need to lift the HIVE_VECTORIZATION_ENABLED restriction inside ConstantPropagate::transform().

Issue Links

• links to: Review Board