HyukjinKwon commented on a change in pull request #33887:
URL: https://github.com/apache/spark/pull/33887#discussion_r699980663
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File path: R/pkg/R/sparkR.R
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@@ -655,6 +655,45 @@ sparkCheckInstall <- function(sparkHome, master,
deployMode) {
} else {
if (interactive() || isMasterLocal(master)) {
message("Spark not found in SPARK_HOME: ", sparkHome)
+ # If EXISTING_SPARKR_BACKEND_PORT environment variable is set, assume
+ # that we're in Spark submit. spark-submit always sets Spark home
+ # so this case should not happen. This is just a safeguard.
+ isSparkRSubmit <- Sys.getenv("EXISTING_SPARKR_BACKEND_PORT", "") != ""
Review comment:
This is the same way as above:
https://github.com/apache/spark/blob/0494dc90af48ce7da0625485a4dc6917a244d580/R/pkg/R/sparkR.R#L153-L155
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