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

Posted to dev@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2015/03/31 03:47:54 UTC

[jira] [Created] (HIVE-10155) LLAP: switch to sensible cache policy

Sergey Shelukhin created HIVE-10155:
---------------------------------------

             Summary: LLAP: switch to sensible cache policy
                 Key: HIVE-10155
                 URL: https://issues.apache.org/jira/browse/HIVE-10155
             Project: Hive
          Issue Type: Sub-task
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin


FIFO policy is currently the default. We can test LRFU one but there were concerns that it won't scale. One option is to implement a two-tier policy, FIFO/LRU for blocks referenced once, and something more complex (LFU, LRFU) for blocks referenced more than once. That should be friendly to large scans of a fact table in terms of behavior and overhead.




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)