Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18334#discussion_r123891656
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -773,6 +773,12 @@ object SQLConf {
.doubleConf
.createWithDefault(0.05)
+ val AUTO_STATS_UPDATE =
+ buildConf("spark.sql.statistics.autoUpdate")
+ .doc("Enables automatic statistics update once table's data is
changed.")
+ .booleanConf
+ .createWithDefault(false)
--- End diff --
we can set it to true by default once we have incremental stats collection.
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