Github user steveloughran commented on a diff in the pull request:
https://github.com/apache/spark/pull/9232#discussion_r43488737
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala ---
@@ -142,6 +145,81 @@ class YarnSparkHadoopUtil extends SparkHadoopUtil {
val containerIdString =
System.getenv(ApplicationConstants.Environment.CONTAINER_ID.name())
ConverterUtils.toContainerId(containerIdString)
}
+
+ /**
+ * Obtains token for the Hive metastore, using the current user as the
principal.
+ * Some exceptions are caught and downgraded to a log message.
+ * @param conf hadoop configuration; the Hive configuration will be
based on this
+ * @return a token, or `None` if there's no need for a token (no
metastore URI or principal
+ * in the config), or if a binding exception was caught and
downgraded.
+ */
+ def obtainTokenForHiveMetastore(conf: Configuration):
Option[Token[DelegationTokenIdentifier]] = {
+ try {
+ obtainTokenForHiveMetastoreInner(conf,
UserGroupInformation.getCurrentUser().getUserName)
+ } catch {
+ case e: ClassNotFoundException =>
+ logInfo(s"Hive class not found $e")
+ logDebug("Hive class not found", e)
+ None
+ case t: Throwable =>
--- End diff --
OK
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