huaxingao commented on code in PR #36092:
URL: https://github.com/apache/spark/pull/36092#discussion_r846583108
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/PushDownUtils.scala:
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@@ -116,7 +116,11 @@ object PushDownUtils extends PredicateHelper {
}
/**
- * Pushes down LIMIT to the data source Scan
+ * Pushes down LIMIT to the data source Scan.
+ *
+ * @return the tuple of Boolean. The first Boolean value represents whether
to push down, and
+ * the second Boolean value represents whether to push down
partially which means to
+ * keep the `Limit`.
Review Comment:
can we be a little more clear and say something like
`...the second Boolean value represents whether to push down partially,
which means Spark will keep the Limit and do it again.`
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