LuciferYang commented on code in PR #37940:
URL: https://github.com/apache/spark/pull/37940#discussion_r976000233
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core/src/main/scala/org/apache/spark/util/collection/Utils.scala:
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@@ -79,6 +79,20 @@ private[spark] object Utils {
builder.result()
}
+ /**
+ * Same function as `keys.zipWithIndex.toMap`, but has perf gain.
+ */
+ def toMap[K](keys: Iterable[K]): Map[K, Int] = {
Review Comment:
[405c625](https://github.com/apache/spark/pull/37940/commits/405c6252893c0df6cdf57cea8da94d1ebe7f56c4)
fix this, waiting ci
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