[HIVE-12809] Vectorization: fast-path for coalesce if input.noNulls = true

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0, 2.1.0
• Fix Version/s: 2.0.0

Release Note

commit f15278af7970f8c857e52938f99c2b0fcc1a8155
Author: Gopal V <[e-mail]>

    HIVE-12809: Vectorization: fast-path for coalesce if input.noNulls = true (Gopal V, reviewed by Sergey Shelukhin)
    
    Signed-off-by: Gopal V <[e-mail]>

• Assignee: Gopal Vijayaraghavan
• Reporter: Gopal Vijayaraghavan
• Created: 08/Jan/16 02:52
• Updated: 02/Jun/16 10:17
• Resolved: 22/Jan/16 23:47

Description

Coalesce can skip processing other columns, if all the input columns are non-null.

Possibly retaining, isRepeating=true.

Issue Links

• relates to: HIVE-12750 Vectorization logic not maintaining noNulls flag and isNull array properly causing wrong query results