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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:
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Status: Patch Available (was: Open)
> 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, 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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