Stavros Kontopoulos created SPARK-23790:
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Summary: proxy-user failed connecting to a kerberos configured
metastore
Key: SPARK-23790
URL: https://issues.apache.org/jira/browse/SPARK-23790
Project: Spark
Issue Type: Bug
Components: Mesos
Affects Versions: 2.3.0
Reporter: Stavros Kontopoulos
This appeared at a customer trying to integrate with a kerberized hdfs cluster.
This is easily fixed with the proposed fix here:
[https://github.com/apache/spark/pull/17333]
The other option is to add the delegation tokens to the current user's UGI as
in here: [https://github.com/apache/spark/pull/17335]. The last fixes the
problem but leads to a failure when someones uses a HadoopRDD because the
latter FileInputFormat to get the splits which call the local ticket cache
TokenCache.obtainTokensForNamenodes which will fail with:
Exception in thread "main"
org.apache.hadoop.ipc.RemoteException(java.io.IOException): Delegation Token
can be issued only with kerberos or web authentication
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDelegationToken(FSNamesystem.java:5896)
This implies that security mode is SIMPLE and hadoop libs there are not aware
of kerberos.
This is related to this issue:
https://issues.apache.org/jira/browse/MAPREDUCE-6876
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