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

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Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: 1.19.0
Fix Version/s: 1.20.0
Component/s: None
Labels:
- pull-request-available

Description

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"):

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

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. Looks like is is reproducible when AbstractMaterializedViewRule is trying to rewrite one materialized view using the another materialized view.
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.