Github user shivaram commented on a diff in the pull request:
https://github.com/apache/spark/pull/16247#discussion_r91843477
--- Diff: R/pkg/R/sparkR.R ---
@@ -362,6 +362,10 @@ sparkR.session <- function(
enableHiveSupport = TRUE,
...) {
+ if (length(sparkConfig[["spark.sql.warehouse.dir"]]) == 0) {
+ sparkConfig[["spark.sql.warehouse.dir"]] <- tempdir()
--- End diff --
As I mentioned in the JIRA, I think this change is not enough. If the user
has a hive-site.xml and the warehouse dir set inside that, this change will
override that [1]. We might need to change the Scala code and/or add a new
option to specify that a new default for SparkR.
[1]
https://github.com/apache/spark/blob/cf33a86285629abe72c1acf235b8bfa6057220a8/sql/core/src/main/scala/org/apache/spark/sql/internal/SharedState.scala#L49
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