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[SPARK-22319][Core] call loginUserFromKeytab before accessing hdfs #19540

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[SPARK-22319][Core] call loginUserFromKeytab before accessing hdfs #19540

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32 changes: 16 additions & 16 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 @@ -342,6 +342,22 @@ object SparkSubmit extends CommandLineUtils with Logging {
val hadoopConf = conf.getOrElse(SparkHadoopUtil.newConfiguration(sparkConf))
val targetDir = Utils.createTempDir()

// assure a keytab is available from any place in a JVM
if (clusterManager == YARN || clusterManager == LOCAL || clusterManager == MESOS) {
if (args.principal != null) {
if (args.keytab != null) {
require(new File(args.keytab).exists(), s"Keytab file: ${args.keytab} does not exist")
// Add keytab and principal configurations in sysProps to make them available
// for later use; e.g. in spark sql, the isolated class loader used to talk
// to HiveMetastore will use these settings. They will be set as Java system
// properties and then loaded by SparkConf
sysProps.put("spark.yarn.keytab", args.keytab)
sysProps.put("spark.yarn.principal", args.principal)
UserGroupInformation.loginUserFromKeytab(args.principal, args.keytab)
}
}
}

// Resolve glob path for different resources.
args.jars = Option(args.jars).map(resolveGlobPaths(_, hadoopConf)).orNull
args.files = Option(args.files).map(resolveGlobPaths(_, hadoopConf)).orNull
Expand Down Expand Up @@ -641,22 +657,6 @@ object SparkSubmit extends CommandLineUtils with Logging {
}
}

// assure a keytab is available from any place in a JVM
if (clusterManager == YARN || clusterManager == LOCAL || clusterManager == MESOS) {
if (args.principal != null) {
if (args.keytab != null) {
require(new File(args.keytab).exists(), s"Keytab file: ${args.keytab} does not exist")
// Add keytab and principal configurations in sysProps to make them available
// for later use; e.g. in spark sql, the isolated class loader used to talk
// to HiveMetastore will use these settings. They will be set as Java system
// properties and then loaded by SparkConf
sysProps.put("spark.yarn.keytab", args.keytab)
sysProps.put("spark.yarn.principal", args.principal)
UserGroupInformation.loginUserFromKeytab(args.principal, args.keytab)
}
}
}

if (clusterManager == MESOS && UserGroupInformation.isSecurityEnabled) {
setRMPrincipal(sysProps)
}
Expand Down