[HIVE-13094] CBO: Assertion error in Case expression

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0, 2.1.0
• Fix Version/s: 2.1.0
• Component/s: CBO
• Assignee: Jesús Camacho Rodríguez
• Reporter: Gopal Vijayaraghavan
• Created: 19/Feb/16 08:33
• Updated: 27/Feb/24 22:23
• Resolved: 24/Feb/16 05:03

Description

Triggered by a trap case in the case evaluation

CASE WHEN (-2) >= 0  THEN SUBSTRING(str0, 1,CAST((-2) AS INT)) ELSE NULL

Exception in thread "b367ad08-d900-4672-8e75-a4e90a52141b b367ad08-d900-4672-8e75-a4e90a52141b main" java.lang.AssertionError: Internal error: Cannot add expression of different type to set:
set type is RecordType(VARCHAR(2147483647) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $f0, VARCHAR(2147483647) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $f1, VARCL
expression type is RecordType(VARCHAR(2147483647) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $f0, VARCHAR(2147483647) CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $fL
set is rel#12408:HiveProject.HIVE.[](input=HepRelVertex#12407,$f0=$0,$f1=$6,$f2=CASE(>=(-(2), 0), substring($6, 1, -(2)), null))
expression is HiveProject#12414
        at org.apache.calcite.util.Util.newInternal(Util.java:774)
        at org.apache.calcite.plan.RelOptUtil.verifyTypeEquivalence(RelOptUtil.java:317)
        at org.apache.calcite.plan.hep.HepRuleCall.transformTo(HepRuleCall.java:57)
        at org.apache.calcite.plan.RelOptRuleCall.transformTo(RelOptRuleCall.java:224)
        at org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveReduceExpressionsRule$ProjectReduceExpressionsRule.onMatch(HiveReduceExpressionsRule.java:208)
        at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:318)
        at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:514)
        at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:392)
        at org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:285)
        at org.apache.calcite.plan.hep.HepInstruction$RuleCollection.execute(HepInstruction.java:72)
        at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:207)
        at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:194)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.hepPlan(CalcitePlanner.java:1265)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.applyPreJoinOrderingTransforms(CalcitePlanner.java:1125)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:938)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:878)
        at org.apache.calcite.tools.Frameworks$1.apply(Frameworks.java:113)
        at org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:969)

Issue Links

• is related to: CALCITE-1502 AssertionError when case statement is used with optional value and literal using ReduceExpressionsRule