On 23 Jun 2017, at 10:22, Saisai Shao <sai.sai.s...@gmail.com<mailto:sai.sai.s...@gmail.com>> wrote:
Spark running with standalone cluster manager currently doesn't support accessing security Hadoop. Basically the problem is that standalone mode Spark doesn't have the facility to distribute delegation tokens. Currently only Spark on YARN or local mode supports security Hadoop. Thanks Jerry There's possibly an ugly workaround where you ssh in to every node and log in direct to your kdc using a keytab you pushed out...that would eliminate the need for anything related to hadoop tokens. After all, that's essentially what spark-on-yarn does when when you give it keytab. see also: https://www.gitbook.com/book/steveloughran/kerberos_and_hadoop/details On Fri, Jun 23, 2017 at 5:10 PM, Mu Kong <kong.mu....@gmail.com<mailto:kong.mu....@gmail.com>> wrote: Hi, all! I was trying to read from a Kerberosed hadoop cluster from a standalone spark cluster. Right now, I encountered some authentication issues with Kerberos: java.io.IOException: Failed on local exception: java.io.IOException: org.apache.hadoop.security.AccessControlException: Client cannot authenticate via:[TOKEN, KERBEROS]; Host Details : local host is: "XXXXXXXXXXXX"; destination host is: XXXXXXXXXXXXXXX; I checked with klist, and principle/realm is correct. I also used hdfs command line to poke HDFS from all the nodes, and it worked. And if I submit job using local(client) mode, the job worked fine. I tried to put everything from hadoop/conf to spark/conf and hive/conf to spark/conf. Also tried edit spark/conf/spark-env.sh to add SPARK_SUBMIT_OPTS/SPARK_MASTER_OPTS/SPARK_SLAVE_OPTS/HADOOP_CONF_DIR/HIVE_CONF_DIR, and tried to export them in .bashrc as well. However, I'm still experiencing the same exception. Then I read some concerning posts about problems with kerberosed hadoop, some post like the following one: http://blog.stratio.com/spark-kerberos-safe-story/ , which indicates that we can not access to kerberosed hdfs using standalone spark cluster. I'm using spark 2.1.1, is it still the case that we can't access kerberosed hdfs with 2.1.1? Thanks! Best regards, Mu
