cecemei commented on code in PR #17864:
URL: https://github.com/apache/druid/pull/17864#discussion_r2031608970
##########
processing/src/main/java/org/apache/druid/query/metadata/metadata/SegmentMetadataQuery.java:
##########
@@ -107,7 +110,17 @@ public SegmentMetadataQuery(
this.toInclude = toInclude == null ? new AllColumnIncluderator() :
toInclude;
this.merge = merge == null ? false : merge;
this.analysisTypes = analysisTypes;
- if (!(dataSource instanceof TableDataSource || dataSource instanceof
UnionDataSource)) {
+ if (dataSource instanceof RestrictedDataSource) {
+ Policy policy = ((RestrictedDataSource) dataSource).getPolicy();
+ // Only no-restriction policy is allowed for segment metadata queries.
+ if (!(policy instanceof NoRestrictionPolicy)) {
+ throw InvalidInput.exception(
+ "Only NoRestrictionPolicy is allowed for SegmentMetadataQuery on
dataSource[%s], found policy[%s].",
+ ((RestrictedDataSource) dataSource).getBase(),
+ policy
+ );
+ }
+ } else if (!(dataSource instanceof TableDataSource || dataSource
instanceof UnionDataSource)) {
Review Comment:
actually i was wrong, union is supported for query, just not directly for
the walker. yea i can add a test case to make it fail for union of a real
restriction.
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