Anchal Agarwal created ZEPPELIN-5042:
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Summary: NullPointerException is thrown for the 1st query on
presto interpreter
Key: ZEPPELIN-5042
URL: https://issues.apache.org/jira/browse/ZEPPELIN-5042
Project: Zeppelin
Issue Type: Bug
Components: JdbcInterpreter
Affects Versions: 0.9.0
Environment: Zeppelin version: 0.9.0-preview2
Presto JDBC driver version: presto-jdbc-340
Presto version: presto-server-323
OS: Linux
Reporter: Anchal Agarwal
Fix For: 0.9.0
I created a presto interpreter in the jdbc group. When I run a notebook, the
first paragraph always fails with an NPE. Subsequent queries work fine. If I
restart the interpreter, again the 1st query fails. If I add a query as precode
statement to the interpreter, that too fails.
{code:java}
ERROR [2020-09-14 08:48:11,083] ({ParallelScheduler-Worker-1}
JDBCInterpreter.java[open]:225) - zeppelin will be ignored. driver.zeppelin and
zeppelin.url is mandatory.
ERROR [2020-09-14 08:48:11,454] ({ParallelScheduler-Worker-1}
JDBCInterpreter.java[executeSql]:807) - Cannot run show tables in default
java.lang.NullPointerException
at
org.apache.zeppelin.jdbc.JDBCInterpreter.executeSql(JDBCInterpreter.java:750)
at
org.apache.zeppelin.jdbc.JDBCInterpreter.internalInterpret(JDBCInterpreter.java:881)
at
org.apache.zeppelin.interpreter.AbstractInterpreter.interpret(AbstractInterpreter.java:47)
at
org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:110)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:776)
at
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:668)
at org.apache.zeppelin.scheduler.Job.run(Job.java:172)
at
org.apache.zeppelin.scheduler.AbstractScheduler.runJob(AbstractScheduler.java:130)
at
org.apache.zeppelin.scheduler.ParallelScheduler.lambda$runJobInScheduler$0(ParallelScheduler.java:39)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
{code}
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