Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/17274#discussion_r106787436 --- 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 -- hmm, that's odd. install.spark could have changed SPARK_HOME perhaps - we probably need to step through this to get more details debugging this. I'm fine if it passes runtests - I'm concerned if a path is returned but udf can't read the file (like the test you have `readLines(x)` - which should be the main use of this change, yes?
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