[
https://issues.apache.org/jira/browse/SPARK-18840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15746877#comment-15746877
]
Saisai Shao commented on SPARK-18840:
-------------------------------------
[~vanzin], is it necessary to fix it in old version (2.0/1.6), seems this
problem seldom happens.
> HDFSCredentialProvider throws exception in non-HDFS security environment
> ------------------------------------------------------------------------
>
> Key: SPARK-18840
> URL: https://issues.apache.org/jira/browse/SPARK-18840
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.6.3, 2.1.0
> Reporter: Saisai Shao
> Assignee: Saisai Shao
> Priority: Minor
> Fix For: 2.1.1, 2.2.0
>
>
> Current in {{HDFSCredentialProvider}}, the code logic assumes HDFS delegation
> token should be existed, this is ok for HDFS environment, but for some cloud
> environment like Azure, HDFS is not required, so it will throw exception:
> {code}
> java.util.NoSuchElementException: head of empty list
> at scala.collection.immutable.Nil$.head(List.scala:337)
> at scala.collection.immutable.Nil$.head(List.scala:334)
> at
> org.apache.spark.deploy.yarn.Client.getTokenRenewalInterval(Client.scala:627)
> {code}
> We should also consider this situation.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
