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https://issues.apache.org/jira/browse/HIVE-22929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krisztian Kasa updated HIVE-22929:
----------------------------------
    Attachment: HIVE-22929.2.patch

> Performance: quoted identifier parsing uses throwaway Regex via 
> String.replaceAll()
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-22929
>                 URL: https://issues.apache.org/jira/browse/HIVE-22929
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Gopal Vijayaraghavan
>            Assignee: Krisztian Kasa
>            Priority: Major
>         Attachments: HIVE-22929.1.patch, HIVE-22929.2.patch, 
> String.replaceAll.png
>
>
>  !String.replaceAll.png! 
> https://github.com/apache/hive/blob/master/parser/src/java/org/apache/hadoop/hive/ql/parse/HiveLexer.g#L530
> {code}
>     '`'  ( '``' | ~('`') )* '`' { setText(getText().substring(1, 
> getText().length() -1 ).replaceAll("``", "`")); }
> {code}



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