[MINOR] Fix R execution on Windows when using R version 4.0
diff --git a/src/test/java/org/apache/sysds/test/AutomatedTestBase.java b/src/test/java/org/apache/sysds/test/AutomatedTestBase.java
index 1e62975..3ae6eea 100644
--- a/src/test/java/org/apache/sysds/test/AutomatedTestBase.java
+++ b/src/test/java/org/apache/sysds/test/AutomatedTestBase.java
@@ -1040,11 +1040,7 @@
"Rscript --default-packages=methods,datasets,graphics,grDevices,stats,utils");
// *** END HACK ***
}
-
- if(System.getProperty("os.name").contains("Windows")) {
- cmd = cmd.replace('/', '\\');
- executionFile = executionFile.replace('/', '\\');
- }
+
if(DEBUG) {
if(!newWay) { // not sure why have this condition
TestUtils.printRScript(executionFile);
@@ -1075,6 +1071,16 @@
String outputR;
String errorString;
try {
+ // if R < 4.0 on Windows is used, the file separator needs to be Windows style
+ if(System.getProperty("os.name").contains("Windows")) {
+ Process r_ver_cmd = Runtime.getRuntime().exec("RScript --version");
+ String r_ver = IOUtils.toString(r_ver_cmd.getErrorStream());
+ if(!r_ver.contains("4.0")) {
+ cmd = cmd.replace('/', '\\');
+ executionFile = executionFile.replace('/', '\\');
+ }
+ }
+
long t0 = System.nanoTime();
if(LOG.isInfoEnabled()) {
LOG.info("starting R script");
