Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/891#discussion_r47457615
--- Diff:
tajo-plan/src/main/java/org/apache/tajo/plan/rewrite/rules/ProjectionPushDownRule.java
---
@@ -795,7 +797,10 @@ public LogicalNode visitGroupBy(Context context,
LogicalPlan plan, LogicalPlan.Q
// Getting projected targets
if (node.hasAggFunctions() && aggEvalNames != null) {
List<AggregationFunctionCallEval> aggEvals = new ArrayList<>();
- for (Iterator<String> it = getFilteredReferences(aggEvalNames,
TUtil.newList(aggEvalNames)); it.hasNext();) {
+ int i = 0;
+ List inputList = new ArrayList<>();
+ inputList.addAll(Arrays.asList(aggEvalNames));
+ for (Iterator<String> it = getFilteredReferences(aggEvalNames,
inputList); it.hasNext();) {
--- End diff --
Can be rewritten with Arrays.asList().
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