Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/17274#discussion_r105818725
--- 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 --
```
Failed
-------------------------------------------------------------------------
1. Error: add and get file to be downloaded with Spark job on every node
(@test_context.R#184)
org.apache.spark.SparkException: Job aborted due to stage failure: Task 2
in stage 0.0 failed 1 times, most recent failure: Lost task 2.0 in stage 0.0
(TID 2, localhost, executor driver): org.apache.spark.SparkException: R
computation failed with
[1] 3
[1] 2
[1] 3
[1][1] 1 1
[1] 2
[1] 2
[1] 2
[1] 2
[1] 2
[1] 2
[1] 2
cannot open the connection
In addition: Warning message:
In file(con, "r") :
cannot open file
'/tmp/spark-82bf379c-0f31-47c0-8ac6-6b764c3cfc90/userFiles-1327d8ac-889e-4861-8263-4f270697fb85/hello221b332ef87f.txt':
No such file or directory
```
The error is weird, since it can pass if I paste these code to SparkR
console. And it also pass if I write these code in a separate script and
submitting with ```bin/spark-submit```. Any thoughts? cc @felixcheung @shivaram
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