capistrant commented on code in PR #18939:
URL: https://github.com/apache/druid/pull/18939#discussion_r2783666287
##########
multi-stage-query/src/main/java/org/apache/druid/msq/indexing/MSQCompactionRunner.java:
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@@ -645,7 +653,7 @@ private Query<?> buildGroupByQuery(
List<PostAggregator> postAggregators =
inputColToVirtualCol.entrySet()
.stream()
- .filter(entry ->
!entry.getKey().equals(ColumnHolder.TIME_COLUMN_NAME))
+ .filter(entry ->
entry.getKey().startsWith(ARRAY_VIRTUAL_COLUMN_PREFIX))
Review Comment:
From looking at this, I think my change to the filter was just blatantly
wrong and now got caught since we started running MSQ compaction tests on a
much wider scope
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