[
https://issues.apache.org/jira/browse/HIVE-26685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Petty updated HIVE-26685:
-------------------------------
Description:
When escaping / unescaping partition path part names, the existing logic incurs
significant avoidable overhead by copying each character sequentially into a
new StringBuilder even when no escaping/unescaping is necessary as well as
using String.format to escape characters inside of the inner loop.
The included patch to improve the performance of these operations refactors two
static method implementations, but requires no external API surface or
user-visible behavior changes. This change is applicable and portable to a wide
range of Hive versions from branch-0.6 onward when the initial method
implementations were added.
was:When escaping / unescaping partition path part names, the existing logic
incurs significant avoidable overhead by copying each character sequentially
into a new StringBuilder even when no escaping/unescaping is necessary as well
as using String.format to escape characters inside of the inner loop.
> Improve Path name escaping / unescaping performance
> ---------------------------------------------------
>
> Key: HIVE-26685
> URL: https://issues.apache.org/jira/browse/HIVE-26685
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Affects Versions: All Versions
> Reporter: James Petty
> Priority: Minor
> Attachments: HIVE-26685.1.patch
>
>
> When escaping / unescaping partition path part names, the existing logic
> incurs significant avoidable overhead by copying each character sequentially
> into a new StringBuilder even when no escaping/unescaping is necessary as
> well as using String.format to escape characters inside of the inner loop.
>
> The included patch to improve the performance of these operations refactors
> two static method implementations, but requires no external API surface or
> user-visible behavior changes. This change is applicable and portable to a
> wide range of Hive versions from branch-0.6 onward when the initial method
> implementations were added.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
