[jira] [Resolved] (ARROW-13997) [C++] restore exec node based query performance

["Jonathan Keane (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-13997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Keane resolved ARROW-13997.
------------------------------------
    Fix Version/s: 6.0.0
       Resolution: Fixed

Resolved in a number of other tickets, at least: ARROW-14206, ARROW-14009

> [C++] restore exec node based query performance
> -----------------------------------------------
>
>                 Key: ARROW-13997
>                 URL: https://issues.apache.org/jira/browse/ARROW-13997
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>    Affects Versions: 6.0.0
>            Reporter: Jonathan Keane
>            Priority: Blocker
>             Fix For: 6.0.0
>
>
> The R bindings transitioned to using exec nodes for all queries. Since ARROW-13740 was merged, the performance for our queries has been slower. ARROW-13940 corrected the accidental disabling of multi threading, which recovered some of the performance, but not all of it.
> The three benchmarks showing the degradation:
> https://conbench.ursa.dev/benchmarks/c6d37c1517af405dbb8ebad83eec010c/
> https://conbench.ursa.dev/benchmarks/cec58c9c21234ffbb1bab28b7fe409ef/
> https://conbench.ursa.dev/benchmarks/99c04f5ef2fe4caf868904699c2f377c/
> The queries for these are defined (by name) at: https://github.com/ursacomputing/arrowbench/blob/19cb0e5dac316ae5e3c9cac4d7534fc202459fe0/R/bm-dataset-taxi-parquet.R#L27-L90
> For 2 of the three, there was a large increase when ARROW-13740 was merged and plateau, and then a smaller step down when ARROW-13940 was merged, but we still haven't reverted to the pre-change mean.



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