Github user bdwyer2 commented on a diff in the pull request:

    https://github.com/apache/spark/pull/16290#discussion_r92916155
  
    --- Diff: R/pkg/inst/tests/testthat/test_context.R ---
    @@ -72,6 +72,20 @@ test_that("repeatedly starting and stopping 
SparkSession", {
       }
     })
     
    +test_that("Default warehouse dir should be set to tempdir", {
    +  sparkR.session.stop()
    +  sparkR.session(enableHiveSupport = FALSE)
    +
    +  # Create a temporary table
    +  sql("CREATE TABLE people_warehouse_test")
    +  # spark-warehouse should be written only tempdir() and not current 
working directory
    +  res <- list.files(path = ".", pattern = ".*spark-warehouse.*",
    --- End diff --
    
    should we test to make sure that no files are created during this process 
instead of only checking for `spark-warehouse`?


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