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  1. Calcite
  2. CALCITE-2050

Exception when pushing postaggregates into Druid

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 1.15.0
    • druid-adapter
    • None

    Description

      After Calcite is upgraded to 1.14 and the rule to push post-aggregations to Druid is enabled, the following query will fail:

      EXPLAIN
      SELECT language, robot, sum(added) - sum(delta) AS a
      FROM druid_table_1
      WHERE extract (week from `__time`) IN (10,11)
        AND robot='Bird Call'
      GROUP BY language, robot;
      

      The error we get is the following:

      Cannot add expression of different type to set:
      set type is RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" language, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" robot, DOUBLE a) NOT NULL
      expression type is RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" language, DOUBLE postagg#0) NOT NULL
      set is rel#1507:HiveProject.HIVE.[](input=HepRelVertex#1514,language=$0,robot=CAST(_UTF-16LE'Bird Call'):VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary",a=-($1, $2))
      expression is DruidQuery#1516
      

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              jcamachorodriguez Jesus Camacho Rodriguez
              jcamachorodriguez Jesus Camacho Rodriguez
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                Created:
                Updated:
                Resolved: