Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/20624#discussion_r170028784 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala --- @@ -387,6 +390,101 @@ case class CatalogStatistics( } } +/** + * This class of statistics for a column is used in [[CatalogTable]] to interact with metastore. + */ +case class CatalogColumnStat( + distinctCount: Option[BigInt] = None, + min: Option[String] = None, + max: Option[String] = None, + nullCount: Option[BigInt] = None, + avgLen: Option[Long] = None, + maxLen: Option[Long] = None, + histogram: Option[Histogram] = None) { --- End diff -- Nit: indents.
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