[jira] [Created] (SPARK-23790) proxy-user failed connecting to a kerberos configured metastore

["Stavros Kontopoulos (JIRA)" <ji...@apache.org>]

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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