codope commented on code in PR #12416:
URL: https://github.com/apache/hudi/pull/12416#discussion_r1868669891
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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/ExpressionIndexSupport.scala:
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@@ -78,8 +93,241 @@ class ExpressionIndexSupport(spark: SparkSession,
}
}
+ /**
+ * Loads view of the Column Stats Index in a transposed format where single
row coalesces every columns'
+ * statistics for a single file, returning it as [[DataFrame]]
+ *
+ * Please check out scala-doc of the [[transpose]] method explaining this
view in more details
+ */
+ def loadTransposed[T](targetColumns: Seq[String],
Review Comment:
Some of the code here is copied directly from `ColumnStatsIndexSupport` with
modifications to handle binary expressions, and we need to refactor in a
followup
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