[
https://issues.apache.org/jira/browse/HIVE-16992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sergey Shelukhin reassigned HIVE-16992:
---------------------------------------
Assignee: Sergey Shelukhin (was: Gopal V)
> LLAP: better default lambda for LRFU policy
> -------------------------------------------
>
> Key: HIVE-16992
> URL: https://issues.apache.org/jira/browse/HIVE-16992
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
>
> LRFU is currently skewed heavily towards LRU; there are 10k-s or 100k-s of
> buffers tracked during a typical workload, but the heap size is around 700.
> We should see if making it closer to LFU (by tweaking the lambda) will
> improve hit rate with small queries infrequently interleaved with large
> scans; and whether it will have negative effects due to perf overhead.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
