Investigate & fix dbt3 scalability problem (MCOL-3471)

[MCOL-3478] optimize hash table construction in PrimProc Created: 2019-09-04  Updated: 2019-10-07  Resolved: 2019-10-07

Status: Closed
Project: MariaDB ColumnStore
Component/s: PrimProc
Affects Version/s: 1.2.5
Fix Version/s: 1.4.0

Type: Sub-Task Priority: Major
Reporter: Patrick LeBlanc (Inactive) Assignee: Patrick LeBlanc (Inactive)
Resolution: Fixed Votes: 0
Labels: None


 Description   

Saw correlation between the lack of scalability & PM hash table construction. Will do some obvious optimizations and check for improvement.



 Comments   
Comment by Patrick LeBlanc (Inactive) [ 2019-10-07 ]

Optimized the single threaded logic, then multi-threaded it. Cut end-to-end query times in half on avg.

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