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Posted to issues@calcite.apache.org by "Alexey Roytman (JIRA)" <ji...@apache.org> on 2017/11/07 14:34:00 UTC
[jira] [Created] (CALCITE-2039) AssertionError at
Mappings.create(Mappings.java:64)
Alexey Roytman created CALCITE-2039:
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Summary: AssertionError at Mappings.create(Mappings.java:64)
Key: CALCITE-2039
URL: https://issues.apache.org/jira/browse/CALCITE-2039
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.14.0
Reporter: Alexey Roytman
Assignee: Julian Hyde
When I use a ProjectableFilterableTable interface, the following query (notice the "select 0 as c1, ...")
select 0 as c1, D101.c1 as c3, D101.c2 as c4, D101.c3 as c5 from (
select T1000001.Category as c1, T1000001.Revenue as c2,
T1000001.\"YEAR\" as c3 from (
select "YEAR", Category, "MONTH", Territory, Quarter, Sub_Category,
Age_Group, Gender, Country, Revenue, Num_Of_Orders, "DATE" from
XSchema.HDP) T1000001) D101
causes an exception:
java.lang.AssertionError
at org.apache.calcite.util.mapping.Mappings.create(Mappings.java:64)
at org.apache.calcite.rel.core.Project.getMapping(Project.java:277)
at org.apache.calcite.rel.core.Project.getMapping(Project.java:257)
at org.apache.calcite.rel.rules.ProjectTableScanRule.apply(ProjectTableScanRule.java:100)
at org.apache.calcite.rel.rules.ProjectTableScanRule$3.onMatch(ProjectTableScanRule.java:83)
at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:212)
at org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:650)
at org.apache.calcite.tools.Programs$5.run(Programs.java:326)
at org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:387)
at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:188)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:321)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:230)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:786)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:640)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:610)
at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:221)
at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:603)
at org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:638)
at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:149)
at org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:218)
...
In the Mappings.create(), mappingType is INVERSE_SURJECTION, and "assert sourceCount >= targetCount" throws the exception, because sourceCount is 3, and targetCount is 4.
At the frame above, in Project.getMapping(), "projects" are: [0, $1, $2, $0] (1st is RexLiteral, others are RexInputRef).
At the frame above, in EnumerableProject.getMapping(), getInput().getRowType() has only 3 fields in the table.
I have a reproduction case (in Java) but it's not within a Calcite standard.
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