Github user jerryshao commented on a diff in the pull request: https://github.com/apache/spark/pull/17872#discussion_r115182668 --- Diff: resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/security/HadoopFSCredentialProvider.scala --- @@ -48,9 +50,16 @@ private[security] class HadoopFSCredentialProvider val tmpCreds = new Credentials() val tokenRenewer = getTokenRenewer(hadoopConf) hadoopFSsToAccess(hadoopConf, sparkConf).foreach { dst => - val dstFs = dst.getFileSystem(hadoopConf) - logInfo("getting token for: " + dst) - dstFs.addDelegationTokens(tokenRenewer, tmpCreds) + try { + val dstFs = dst.getFileSystem(hadoopConf) + logInfo("getting token for: " + dst) + dstFs.addDelegationTokens(tokenRenewer, tmpCreds) + } catch { + case e: StandbyException => + logWarning(s"Namenode ${dst} is in state standby", e) --- End diff -- It's not accurate to say "Namenode" here, because we may configure to other non-HDFS.
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