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[SPARK-41958][CORE] Disallow arbitrary custom classpath with proxy user in cluster mode #39474

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[SPARK-41958][CORE] Disallow arbitrary custom classpath with proxy user in cluster mode #39474

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5875473
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peter-toth Jul 28, 2021
a3dc45a
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Ngone51 Jan 6, 2023
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15 changes: 15 additions & 0 deletions core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -305,6 +305,10 @@ private[spark] class SparkSubmit extends Logging {
val isKubernetesClient = clusterManager == KUBERNETES && deployMode == CLIENT
val isKubernetesClusterModeDriver = isKubernetesClient &&
sparkConf.getBoolean("spark.kubernetes.submitInDriver", false)
val isCustomClasspathInClusterModeDisallowed =
!sparkConf.get(ALLOW_CUSTOM_CLASSPATH_BY_PROXY_USER_IN_CLUSTER_MODE) &&
args.proxyUser != null &&
(isYarnCluster || isMesosCluster || isStandAloneCluster || isKubernetesCluster)

if (!isMesosCluster && !isStandAloneCluster) {
// Resolve maven dependencies if there are any and add classpath to jars. Add them to py-files
Expand Down Expand Up @@ -881,6 +885,13 @@ private[spark] class SparkSubmit extends Logging {

sparkConf.set("spark.app.submitTime", System.currentTimeMillis().toString)

if (childClasspath.nonEmpty && isCustomClasspathInClusterModeDisallowed) {
childClasspath.clear()
logWarning(s"Ignore classpath ${childClasspath.mkString(", ")} with proxy user specified " +
s"in Cluster mode when ${ALLOW_CUSTOM_CLASSPATH_BY_PROXY_USER_IN_CLUSTER_MODE.key} is " +
s"disabled")
}

(childArgs.toSeq, childClasspath.toSeq, sparkConf, childMainClass)
}

Expand Down Expand Up @@ -934,6 +945,10 @@ private[spark] class SparkSubmit extends Logging {
logInfo(s"Classpath elements:\n${childClasspath.mkString("\n")}")
logInfo("\n")
}
assert(!(args.deployMode == "cluster" && args.proxyUser != null && childClasspath.nonEmpty) ||
sparkConf.get(ALLOW_CUSTOM_CLASSPATH_BY_PROXY_USER_IN_CLUSTER_MODE),
s"Classpath of spark-submit should not change in cluster mode if proxy user is specified " +
s"when ${ALLOW_CUSTOM_CLASSPATH_BY_PROXY_USER_IN_CLUSTER_MODE.key} is disabled")
val loader = getSubmitClassLoader(sparkConf)
for (jar <- childClasspath) {
addJarToClasspath(jar, loader)
Expand Down
7 changes: 7 additions & 0 deletions core/src/main/scala/org/apache/spark/internal/config/package.scala
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Expand Up @@ -2461,4 +2461,11 @@ package object config {
.version("3.4.0")
.timeConf(TimeUnit.MILLISECONDS)
.createWithDefaultString("5s")

private[spark] val ALLOW_CUSTOM_CLASSPATH_BY_PROXY_USER_IN_CLUSTER_MODE =
ConfigBuilder("spark.submit.proxyUser.allowCustomClasspathInClusterMode")
.internal()
.version("3.4.0")
.booleanConf
.createWithDefault(false)
}