KeeProMise commented on code in PR #59594:
URL: https://github.com/apache/doris/pull/59594#discussion_r2667273064
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fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/AbstractMaterializedViewRule.java:
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@@ -371,7 +373,7 @@ protected List<Plan> doRewrite(StructInfo queryStructInfo,
CascadesContext casca
return rewriteResults;
}
boolean partitionNeedUnion =
PartitionCompensator.needUnionRewrite(invalidPartitions, cascadesContext);
- boolean canUnionRewrite = canUnionRewrite(queryPlan,
+ canUnionRewrite = canUnionRewrite && canUnionRewrite(queryPlan,
Review Comment:
@seawinde Since we do not want Doris to read external data for union
compensation during query rewriting — as our external tables are excessively
large and may cause performance issues in Doris — queries will be routed to
Spark for processing when Doris fails to hit the materialized view.
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