Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4688#discussion_r25914375
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala ---
@@ -43,6 +51,18 @@ import org.apache.spark.util.Utils
*/
class YarnSparkHadoopUtil extends SparkHadoopUtil {
+ private var keytab: String = null
+ private var principal: String = null
+ @volatile private var loggedInViaKeytab = false
+ @volatile private var loggedInUGI: UserGroupInformation = null
+ @volatile private var lastCredentialsRefresh = 0L
+ private lazy val delegationTokenRenewer =
+ Executors.newSingleThreadScheduledExecutor(
+ Utils.namedThreadFactory("Delegation Token Refresh Thread"))
+ private lazy val delegationTokenExecuterUpdaterThread = new Runnable {
+ override def run(): Unit = updateCredentialsIfRequired()
--- End diff --
Maybe wrap with `Utils.logUncaughtExceptions`?
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