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Posted to issues@calcite.apache.org by "Hongze Zhang (JIRA)" <ji...@apache.org> on 2019/04/06 04:29:00 UTC

[jira] [Resolved] (CALCITE-2847) Optimize global LOOKAHEAD for SQL parsers

     [ https://issues.apache.org/jira/browse/CALCITE-2847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hongze Zhang resolved CALCITE-2847.
-----------------------------------
    Resolution: Fixed

Fixed inĀ [16f518b359cdf529d5bbe42cd5e8663001030d14 |https://gitbox.apache.org/repos/asf?p=calcite.git;a=commit;h=16f518b359cdf529d5bbe42cd5e8663001030d14].

> Optimize global LOOKAHEAD for SQL parsers
> -----------------------------------------
>
>                 Key: CALCITE-2847
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2847
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Hongze Zhang
>            Assignee: Hongze Zhang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.20.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> Currently global LOOKAHEAD is set to 2 for the built-in SQL parsers[1], we'd like to optimize LOOKAHEAD to 1 to enable performance enhancement if possible.
> [1]https://github.com/apache/calcite/blob/883666929478aabe07ee5b9e572c43a6f1a703e2/core/pom.xml#L304



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