[HIVE-8513] Vectorize multiple children operators

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: Vectorization
• Assignee: Matt McCline
• Reporter: Matt McCline
• Created: 18/Oct/14 00:30
• Updated: 29/Jul/16 22:38
• Resolved: 29/Jul/16 22:38

Description

For HIVE-8498 we turned off vectorization if any operator is encountered with multiple children.

Thus, this query will not be vectorized:
from orc1 a
insert overwrite table orc_rn1 select a.* where a.rn < 100
insert overwrite table orc_rn2 select a.* where a.rn >= 100 and a.rn < 1000
insert overwrite table orc_rn3 select a.* where a.rn >= 1000;

But Prashanth prasanthj also points that correlation operators Mux/Demux will also not be vectorized, too.