okumin commented on a change in pull request #1873:
URL: https://github.com/apache/hive/pull/1873#discussion_r558323016
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File path: ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
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@@ -1343,7 +1344,9 @@ private void addCTEAsSubQuery(QB qb, String cteName,
String cteAlias)
@Override
public List<Task<?>> getAllRootTasks() {
if (!rootTasksResolved) {
- rootTasks = toRealRootTasks(rootClause.asExecutionOrder());
+ List<CTEClause> execution = rootClause.asExecutionOrder();
+ linkRealDependencies(execution);
+ rootTasks = toRealRootTasks(execution);
Review comment:
Separated mutating tasks and picking up real roots to avoid complexity.
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