You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues-all@impala.apache.org by "Joe McDonnell (Jira)" <ji...@apache.org> on 2022/12/20 19:16:00 UTC

[jira] [Updated] (IMPALA-10803) Switch default data cache eviction policy to LIRS

     [ https://issues.apache.org/jira/browse/IMPALA-10803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joe McDonnell updated IMPALA-10803:
-----------------------------------
    Target Version: Impala 4.3.0  (was: Impala 4.1.0)

> Switch default data cache eviction policy to LIRS
> -------------------------------------------------
>
>                 Key: IMPALA-10803
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10803
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 4.1.0
>            Reporter: Joe McDonnell
>            Assignee: Joe McDonnell
>            Priority: Major
>
> The data cache currently defaults to using LRU for the cache eviction policy. In IMPALA-8690, we added support for LIRS, a scan resistant eviction policy. This is now stable, and we should switch to using LIRS by default. It is likely to have better performance characteristics than LRU for most workloads.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscribe@impala.apache.org
For additional commands, e-mail: issues-all-help@impala.apache.org