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https://issues.apache.org/jira/browse/HIVE-15577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084090#comment-17084090
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David Mollitor commented on HIVE-15577:
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Another option is to upgrade to ANTLR4, but this is a big lift: [HIVE-23177]
> Simplify current parser
> -----------------------
>
> Key: HIVE-15577
> URL: https://issues.apache.org/jira/browse/HIVE-15577
> Project: Hive
> Issue Type: Bug
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Priority: Major
>
> We encountered "code too large" problem frequently. We need to reduce the
> code size.
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