[DRILL-3784] simple Jdbc program fails with NoClassDefFoundError

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.2.0
• Assignee: Jacques Nadeau
• Reporter: Abdel Hakim Deneche
• Created: 15/Sep/15 19:42
• Updated: 30/Sep/15 06:06
• Resolved: 27/Sep/15 19:21

Description

I have zookeeper installed and I'm running a single drillbit.

I'm running a simple Jdbc program that uses drill-jdbc-all, and I do get the following error when trying to connect:

Exception in thread "main" java.lang.NoClassDefFoundError: oadd/org/codehaus/jackson/map/ObjectMapper
	at oadd.org.apache.curator.x.discovery.details.JsonInstanceSerializer.<init>(JsonInstanceSerializer.java:42)
	at oadd.org.apache.curator.x.discovery.ServiceDiscoveryBuilder.builder(ServiceDiscoveryBuilder.java:42)
	at oadd.org.apache.drill.exec.coord.zk.ZKClusterCoordinator.getDiscovery(ZKClusterCoordinator.java:265)
	at oadd.org.apache.drill.exec.coord.zk.ZKClusterCoordinator.<init>(ZKClusterCoordinator.java:103)
	at oadd.org.apache.drill.exec.client.DrillClient.connect(DrillClient.java:185)
	at org.apache.drill.jdbc.impl.DrillConnectionImpl.<init>(DrillConnectionImpl.java:134)
	at org.apache.drill.jdbc.impl.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:66)
	at org.apache.drill.jdbc.impl.DrillFactory.newConnection(DrillFactory.java:69)
	at oadd.net.hydromatic.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:126)
	at org.apache.drill.jdbc.Driver.connect(Driver.java:72)
	at java.sql.DriverManager.getConnection(DriverManager.java:571)
	at java.sql.DriverManager.getConnection(DriverManager.java:233)
	at SimpleJdbc.main(SimpleJdbc.java:13)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.lang.ClassNotFoundException: oadd.org.codehaus.jackson.map.ObjectMapper
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	... 18 more

Using jdbc-all built right before DRILL-3589 commit works fine, so the problem seem to be related to the changes in DRILL-3589

Here is the program I'm running:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class SimpleJdbc {

  public static void main(String[] args) throws Exception {
    Class.forName("org.apache.drill.jdbc.Driver").newInstance();
    Connection conn = DriverManager.getConnection("jdbc:drill:");

    Statement stmt = null;
    ResultSet rs = null;

    try {
      stmt = conn.createStatement();
      rs = stmt.executeQuery("SELECT employee_id FROM cp.`employee.json`");

      while (rs.next()) {
        System.out.println(rs.getObject(1));
      }

    } finally {
      if (stmt != null) {
        stmt.close();
      }
      if (rs != null) {
        rs.close();
      }

      conn.close();
    }
  }
}

Issue Links

• is related to: DRILL-3589 JDBC driver maven artifact includes a lot of unnecessary dependencies