[jira] [Created] (CALCITE-3052) Error while applying rule MaterializedViewAggregateRule(Project-Aggregate): ArrayIndexOutOfBoundsException

["Anton Haidai (JIRA)" <ji...@apache.org>]

Anton Haidai created CALCITE-3052:
-------------------------------------

             Summary: Error while applying rule MaterializedViewAggregateRule(Project-Aggregate): ArrayIndexOutOfBoundsException
                 Key: CALCITE-3052
                 URL: https://issues.apache.org/jira/browse/CALCITE-3052
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.19.0
            Reporter: Anton Haidai


*Materialized views enabled:*
# "select avg(grade), count(*), max(grade), sum(grade), min(grade), team from students group by team"
# "select avg(grade), count(*), max(grade), sum(grade), min(grade), team, faculty from students group by faculty, team",

*Query:*
# "select count(*), team from students group by team"

*Error* (stacktrace is obtained using the current *master* branch: "247c7d4f76"):
{code}
at org.apache.calcite.prepare.ZEnginePreparingStmt.optimize(ZEnginePreparingStmt.java:311)
	at org.apache.calcite.prepare.ZEnginePreparingStmt.prepare_(ZEnginePreparingStmt.java:195)
	at org.apache.calcite.prepare.ZEnginePreparingStmt.prepareRel(ZEnginePreparingStmt.java:142)
	at org.apache.calcite.prepare.ZEnginePrepareImpl.prepare2_(ZEnginePrepareImpl.java:424)
	at org.apache.calcite.prepare.ZEnginePrepareImpl.prepareSql(ZEnginePrepareImpl.java:108)
	... 55 common frames omitted
Caused by: java.lang.ArrayIndexOutOfBoundsException: 2
	at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:60)
	at org.apache.calcite.rex.RexBuilder.makeInputRef(RexBuilder.java:841)
	at org.apache.calcite.rel.rules.AbstractMaterializedViewRule$MaterializedViewAggregateRule.rewriteView(AbstractMaterializedViewRule.java:1507)
	at org.apache.calcite.rel.rules.AbstractMaterializedViewRule.perform(AbstractMaterializedViewRule.java:522)
	at org.apache.calcite.rel.rules.AbstractMaterializedViewRule$MaterializedViewProjectAggregateRule.onMatch(AbstractMaterializedViewRule.java:1776)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:208)
	... 71 common frames omitted
{code}

Reproducible only if both Materialization views listed are enabled: any single one of these two could be successfully used with the query without any errors. 
Currently, I'm trying to reproduce the issue in "MaterializationTest": without a success so far, I'll update the ticket if I'll find a working way to reproduce the issue in the test will be discovered.



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