Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20327#discussion_r165193521
--- Diff: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala ---
@@ -744,7 +744,9 @@ object SparkSubmit extends CommandLineUtils with
Logging {
}
// Ignore invalid spark.driver.host in cluster modes.
- if (deployMode == CLUSTER) {
+ if (isYarnCluster) {
+ sparkConf.set("spark.driver.host", "${env:NM_HOST}")
--- End diff --
This actually requires `spark.sql.variable.substitute` set to `true`,
though by default it is, if some user accidentally changes it, the code won't
work.
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