Github user yolandagao commented on the pull request:
https://github.com/apache/spark/pull/9272#issuecomment-152904592
@yhuai Hi Yin, SPARK-11265 is a different issue - in yarn Client.scala
code, hive metastore token is obtained when kerberos is enabled to set up AM
container launch context, during which Hive and HiveConf instantiation failed
due to a new change in Hive 1.2.1.
YarnSparkHadoopUtil.get.obtainTokensForNamenodes(nns, hadoopConf,
credentials)
obtainTokenForHiveMetastore(hadoopConf, credentials)
obtainTokenForHBase(hadoopConf, credentials)
....
setupSecurityToken(amContainer)
UserGroupInformation.getCurrentUser().addCredentials(credentials)
SPARK-11265 fix will not solve the problem here. In yarn-client mode, Hive
client with IsolatedClientLoader has no access to these delegation tokens and
kerberos tickets (set up via UGI.loginUserFromKeytab in SparkSubmit), as it has
a pure new UserGroupInformation class loaded.
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