Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/17274#discussion_r106083228
--- 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 --
* It fails when I run ```run-tests.sh``` on my machine.
* It succeed when I paste these code to SparkR console.
* It succeed when I paste these code to text file, and submit by
```bin/spark-submit test.R```(local mode) or ```bin/spark-submit --master yarn
test.R```(yarn mode).
So I think it may caused by the test suites infrastructure, but I'm not
familiar with that part.
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