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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