kasakrisz commented on code in PR #4864:
URL: https://github.com/apache/hive/pull/4864#discussion_r1400584722
##########
ql/src/java/org/apache/hadoop/hive/ql/exec/OperatorUtils.java:
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@@ -176,6 +176,48 @@ public static <T> Set<T>
findOperatorsUpstreamJoinAccounted(Operator<?> start, C
return found;
}
+ /**
+ * Check whether there are more operators in the specified operator tree
branch than the given limit
+ * until a ReduceSinkOperator is reached.
+ * The method traverses the parent operators of the specified root operator
in dept first manner.
+ * @param start root of the operator tree to check
+ * @param opClazz type of operator to track
+ * @param limit maximum allowed number of operator in a branch of the tree
+ * @return true if limit is exceeded false otherwise
Review Comment:
changed
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