Pankaj Singh created ZEPPELIN-1348:
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Summary: JDBC interpreter with MySql : Running a paragraphs fails
for first time when executed
Key: ZEPPELIN-1348
URL: https://issues.apache.org/jira/browse/ZEPPELIN-1348
Project: Zeppelin
Issue Type: Bug
Components: zeppelin-interpreter
Affects Versions: 0.6.0
Environment: Zeppelin server running on CentOS release 6.8 (Final)
Reporter: Pankaj Singh
Fix For: 0.6.2
I have couple of notebooks which uses %jdbc interpreter to connect to mysql
database and run couple of queries. The paragraph uses dynamic form (textbox)
Whenever i open the notebook in the morning for the first time and execute a
paragraph it fails with error. re-executing it works.
{code}
class com.mysql.jdbc.exceptions.jdbc4.CommunicationsException
sun.reflect.GeneratedConstructorAccessor9.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:422)
com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:981)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3465)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3365)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3805)
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2547)
com.mysql.jdbc.ConnectionImpl.setSessionMaxRows(ConnectionImpl.java:5469)
com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:836)
com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:740)
org.apache.zeppelin.jdbc.JDBCInterpreter.executeSql(JDBCInterpreter.java:312)
org.apache.zeppelin.jdbc.JDBCInterpreter.interpret(JDBCInterpreter.java:396)
org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:94)
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:341)
org.apache.zeppelin.scheduler.Job.run(Job.java:176)
org.apache.zeppelin.scheduler.ParallelScheduler$JobRunner.run(ParallelScheduler.java:162)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
{code}
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