Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r25476271
--- 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)
+ val localFS = FileSystem.getLocal(conf)
+ // At this point, SparkEnv is likely no initialized, so create a
dir, put the keytab there.
+ val tempDir = Utils.createTempDir()
--- End diff --
`Utils.createDirectory()` doesn't create a secure directory anymore; you
need to manually call `Utils.chmod700`.
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