[
https://issues.apache.org/jira/browse/HIVE-12086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gopal V updated HIVE-12086:
---------------------------
Attachment: perf-top-floatreader.png
!perf-top-floatreader.jpg!
[~prasanth_j]: The benchmark doesn't look very different - I will probably work
more on this, beyond changing the buffered reader.
> ORC: Buffered float readers to remove vtable thunks
> ---------------------------------------------------
>
> Key: HIVE-12086
> URL: https://issues.apache.org/jira/browse/HIVE-12086
> Project: Hive
> Issue Type: Bug
> Components: File Formats
> Affects Versions: 1.3.0, 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Minor
> Attachments: HIVE-12086.1.patch, perf-top-floatreader.png
>
>
> ORC float tree reader spends an inordinate amount of time, doing vtable
> thunks through InputStream interface.
> The actual operation is not faster with this patch, but the interface lookup
> goes down ~4x.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
