Github user wangyum commented on a diff in the pull request: https://github.com/apache/spark/pull/21734#discussion_r203425909 --- Diff: resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala --- @@ -193,8 +193,7 @@ object YarnSparkHadoopUtil { sparkConf: SparkConf, hadoopConf: Configuration): Set[FileSystem] = { val filesystemsToAccess = sparkConf.get(FILESYSTEMS_TO_ACCESS) - .map(new Path(_).getFileSystem(hadoopConf)) - .toSet + val isRequestAllDelegationTokens = filesystemsToAccess.isEmpty --- End diff -- Then `spark.yarn.access.hadoopFileSystems` only can be used in filesystems that without HA. Because HA filesystem must configure 2 namenodes info in `hdfs-site.xml`.
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