Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22758#discussion_r226151421
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveMetastoreCatalog.scala ---
@@ -193,6 +193,16 @@ private[hive] class HiveMetastoreCatalog(sparkSession:
SparkSession) extends Log
None)
val logicalRelation = cached.getOrElse {
val updatedTable = inferIfNeeded(relation, options, fileFormat)
+ // Intialize the catalogTable stats if its not defined.An intial
value has to be defined
--- End diff --
I don't quite understand why table must have stats. For both file sources
and hive tables, we will estimate the data size with files, if the table
doesn't have stats.
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