Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.1.0
    • Fix Version/s: 2.3.0
    • Component/s: Parser
    • Labels:
    • Hadoop Flags:
      Incompatible change

      Description

      The main purpose for the configuration of HIVE_SUPPORT_SQL11_RESERVED_KEYWORDS is for backward compatibility because a lot of reserved key words has been used as identifiers in the previous releases. We already have had several releases with this configuration. Now when I tried to add new set operators to the parser, ANTLR is always complaining "code too large". I think it is time to remove this configuration. (1) It will simplify the parser logic and largely reduce the size of generated parser code; (2) it leave space for new features, especially those which require parser changes.

        Attachments

        1. HIVE-14872.02.patch
          104 kB
          Pengcheng Xiong
        2. HIVE-14872.01.patch
          3 kB
          Pengcheng Xiong

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              • Assignee:
                pxiong Pengcheng Xiong
                Reporter:
                pxiong Pengcheng Xiong
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                • Created:
                  Updated:
                  Resolved: