HyukjinKwon commented on a change in pull request #23760: [SPARK-26762][SQL][R]
Arrow optimization for conversion from Spark DataFrame to R DataFrame
URL: https://github.com/apache/spark/pull/23760#discussion_r258309338
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File path: R/pkg/tests/fulltests/test_sparkSQL.R
##########
@@ -332,7 +332,24 @@ test_that("createDataFrame Arrow optimization", {
})
})
-test_that("createDataFrame Arrow optimization - type specification", {
+test_that("createDataFrame/collect Arrow optimization - many partitions
(partition order test)", {
+ skip_if_not_installed("arrow")
+
+ conf <- callJMethod(sparkSession, "conf")
+ arrowEnabled <- sparkR.conf("spark.sql.execution.arrow.enabled")[[1]]
+
+ callJMethod(conf, "set", "spark.sql.execution.arrow.enabled", "true")
+ tryCatch({
+ expect_equal(collect(createDataFrame(mtcars, numPartitions = 32)),
Review comment:
They are evenly same 1 row per partitions so it wouldn't be likely in an
order anyway .. I also manually verifies that it comes out of order pretty
consistently.
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