[GitHub] felixcheung commented on a change in pull request #23746: [SPARK-26761][SQL][R] Vectorized R gapply[Collect]() implementation

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felixcheung commented on a change in pull request #23746: [SPARK-26761][SQL][R] Vectorized R gapply[Collect]() implementation
URL: https://github.com/apache/spark/pull/23746#discussion_r255323898
 
 

 ##########
 File path: R/pkg/tests/fulltests/test_sparkSQL.R
 ##########
 @@ -3529,6 +3529,116 @@ test_that("gapply() and gapplyCollect() on a DataFrame", {
   })
 })
 
+test_that("gapply() Arrow optimization", {
+  skip_if_not_installed("arrow")
+  df <- createDataFrame(mtcars)
+
+  conf <- callJMethod(sparkSession, "conf")
+  arrowEnabled <- sparkR.conf("spark.sql.execution.arrow.enabled")[[1]]
+
+  callJMethod(conf, "set", "spark.sql.execution.arrow.enabled", "false")
 
 Review comment:
   If this is mostly in tests I wouldn't bother with another method...

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