Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/17274#discussion_r105837991
--- Diff: R/pkg/inst/tests/testthat/test_context.R ---
@@ -177,6 +177,13 @@ test_that("add and get file to be downloaded with
Spark job on every node", {
spark.addFile(path)
download_path <- spark.getSparkFiles(filename)
expect_equal(readLines(download_path), words)
+
+ # Test spark.getSparkFiles works well on executors.
+ seq <- seq(from = 1, to = 10, length.out = 5)
+ f <- function(seq) { readLines(spark.getSparkFiles(filename)) }
+ results <- spark.lapply(seq, f)
+ for (i in 1:5) { expect_equal(results[[i]], words) }
+
--- End diff --
does it work when you run `run-tests` on your machine? what are the
parameter (esp. --master) you use wth spark-submit?
it looks like the UDF function itself has failed
just a thought - perhaps `SparkR` package needs to be loaded within the UDF?
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