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

Posted to dev@hive.apache.org by "Slim Bouguerra (Jira)" <ji...@apache.org> on 2020/01/22 17:56:00 UTC

[jira] [Created] (HIVE-22760) Add Clock caching eviction based strategy

Slim Bouguerra created HIVE-22760:
-------------------------------------

             Summary: Add Clock caching eviction based strategy
                 Key: HIVE-22760
                 URL: https://issues.apache.org/jira/browse/HIVE-22760
             Project: Hive
          Issue Type: New Feature
          Components: llap
            Reporter: Slim Bouguerra
            Assignee: Slim Bouguerra


LRFU is the current default right now.
The main issue with such Strategy is that it has a very high memory overhead, in addition to that, most of the accounting has to happen under locks thus can be source of contentions.
Add Simpler policy like clock, can help with both issues.




--
This message was sent by Atlassian Jira
(v8.3.4#803005)