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https://issues.apache.org/jira/browse/HIVE-26685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei Zheng updated HIVE-26685:
-----------------------------
Assignee: James Petty
Resolution: Fixed
Status: Resolved (was: Patch Available)
> 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
> Assignee: James Petty
> Priority: Minor
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: HIVE-26685.1.patch
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> 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.
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