Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r25476204
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala ---
@@ -82,6 +93,102 @@ class YarnSparkHadoopUtil extends SparkHadoopUtil {
if (credentials != null) credentials.getSecretKey(new Text(key)) else
null
}
+ override def setPrincipalAndKeytabForLogin(principal: String, keytab:
String): Unit = {
+ loginPrincipal = Option(principal)
+ keytabFile = Option(keytab)
+ }
+
+ private[spark] override def scheduleLoginFromKeytab(
+ callback: (SerializableBuffer) => Unit): Unit = {
+
+ loginPrincipal match {
+ case Some(principal) =>
+ val keytab = keytabFile.get
+ val remoteFs = FileSystem.get(conf)
+ val remoteKeytabPath = new Path(
+ remoteFs.getHomeDirectory, System.getenv("SPARK_STAGING_DIR") +
Path.SEPARATOR + keytab)
--- End diff --
Where is SPARK_STAGING_DIR set? I don't see it in the current code, nor in
your patch.
I'm partial to making the remote location of the keytab file an explicit
argument to this method. The caller knows where the keytab is, right?
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