danny0405 commented on a change in pull request #2030:
URL: https://github.com/apache/calcite/pull/2030#discussion_r448135284
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File path: core/src/test/java/org/apache/calcite/plan/RelWriterTest.java
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@@ -872,6 +900,20 @@ private RelNode mockCountOver(String table,
return rel;
}
+ @Test void testHashDistributionWithoutKeys() {
+ final RelNode root = createSortPlan(RelDistributions.hash(new
ArrayList<>()));
+ final RelJsonWriter writer = new RelJsonWriter();
Review comment:
Use `Collections.emptyList()` instead of `new ArrayList<>()`.
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