[jira] [Created] (ZEPPELIN-1995) Scheduled execution of JDBC Interpreter fails with Kerberos-enabled Hive

["Vadim Lositski (JIRA)" <ji...@apache.org>]

Vadim Lositski created ZEPPELIN-1995:
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             Summary: Scheduled execution of JDBC Interpreter fails with Kerberos-enabled Hive
                 Key: ZEPPELIN-1995
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-1995
             Project: Zeppelin
          Issue Type: Bug
          Components: zeppelin-interpreter
    Affects Versions: 0.6.2, 0.6.1, 0.6.0
         Environment: HDP 2.5.3, Zeppelin 0.6.0
            Reporter: Vadim Lositski


We have following paragraph, with Hive configured as default JDBC datasource
{code}
%jdbc
select current_timestamp
{code}
Kerberos is enabled in our cluster, interpreter is configured to use keytab and everything works fine when run from UI

However, when notebook is scheduled to run as a cron job periodically following exception occurs.

{code}java.sql.SQLException: Could not open client transport for any of the Server URI's in ZooKeeper: GSS initiate failed
class org.apache.zeppelin.interpreter.InterpreterException
org.apache.zeppelin.jdbc.JDBCInterpreter.getConnection(JDBCInterpreter.java:250)
org.apache.zeppelin.jdbc.JDBCInterpreter.getStatement(JDBCInterpreter.java:275){code}

I suspect it is because of a fact that Kerberos ticket is initialized when interpreter is started and not available in the scheduler thread or it is  expired and not refreshed again.

Please ensure that Kerberos ticket is always available for scheduler thread and refreshed if needed 



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