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From Pengcheng Xiong <pxi...@apache.org>
Subject About Calcite-1058
Date Tue, 02 Feb 2016 07:14:58 GMT
Hi all,

  Calcite-1058 made RelBuilder.filter(false) and RelBuilder.limit(0, 0)
simplify to empty(), i.e., empty logical values. However, Hive ASTConverter
is not able to deal with empty logical values. I saw it was resolved in
Calcite 1.6 but it was not included in the 1.6 snapshot when we tested
against Hive. I would assume that replacing RelBuilder class with a newly
created HiveRelBuilder would be expensive. Could you please let me know if
you have any better ideas? Thanks!

Best
Pengcheng

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