Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/15090#discussion_r80156525
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/Statistics.scala
---
@@ -32,19 +34,74 @@ package org.apache.spark.sql.catalyst.plans.logical
* @param sizeInBytes Physical size in bytes. For leaf operators this
defaults to 1, otherwise it
* defaults to the product of children's `sizeInBytes`.
* @param rowCount Estimated number of rows.
+ * @param colStats Column-level statistics.
* @param isBroadcastable If true, output is small enough to be used in a
broadcast join.
*/
case class Statistics(
sizeInBytes: BigInt,
rowCount: Option[BigInt] = None,
+ colStats: Map[String, ColumnStats] = Map.empty,
isBroadcastable: Boolean = false) {
+
override def toString: String = "Statistics(" + simpleString + ")"
/** Readable string representation for the Statistics. */
def simpleString: String = {
Seq(s"sizeInBytes=$sizeInBytes",
if (rowCount.isDefined) s"rowCount=${rowCount.get}" else "",
+ if (colStats.nonEmpty) s"colStats=$colStats" else "",
--- End diff --
I am not sure whether we should do this. Hive does not show it in the `DESC
FORMATTED/EXTENDED`, right? The string could be super long when the table has
many columns.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
