Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20167#discussion_r161860003
--- Diff:
resource-managers/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerUtils.scala
---
@@ -80,10 +80,27 @@ trait MesosSchedulerUtils extends Logging {
}
fwInfoBuilder.setHostname(Option(conf.getenv("SPARK_PUBLIC_DNS")).getOrElse(
conf.get(DRIVER_HOST_ADDRESS)))
+ conf.getOption("spark.mesos.principal.file")
+ .orElse(Option(conf.getenv("SPARK_MESOS_PRINCIPAL_FILE"))
+ .foreach { principalFile =>
+ val file = io.Source.fromFile(principalFile)
+ val principal = file.getLines.next()
+ file.close
+ fwInfoBuilder.setPrincipal(principal)
+ credBuilder.setPrincipal(principal)
+ }
conf.getOption("spark.mesos.principal").foreach { principal =>
fwInfoBuilder.setPrincipal(principal)
credBuilder.setPrincipal(principal)
}
+ conf.getOption("spark.mesos.secret.file")
+ .orElse(Option(conf.getenv("SPARK_MESOS_SECRET_FILE"))
--- End diff --
You can't read `/proc/<pid>/environ` from other users' processes.
```
$ cat /proc/1/environ
cat: /proc/1/environ: Permission denied
```
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