zentol commented on a change in pull request #7276: [FLINK-10566] Fix
exponential planning time of large programs
URL: https://github.com/apache/flink/pull/7276#discussion_r240968531
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File path: flink-core/src/main/java/org/apache/flink/api/common/Plan.java
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@@ -362,9 +363,13 @@ public int getMaximumParallelism() {
private static final class MaxDopVisitor implements
Visitor<Operator<?>> {
private int maxDop = -1;
+ private Set<Operator> visitedOperators = new HashSet<>();
Review comment:
can this be final?
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