Hi Chris,

You need to copy more files to ./lib directory. Please see Tajo JDBC guide.
http://tajo.apache.org/docs/current/jdbc_driver.html#from-binary-distribution

As the description, you should copy all Jar files in
tajo-dist/target/tajo-x.y.z/share/jdbc-dist after 'mvn clean install
-Pdist -DskipTests -Dtar'

Thanks,
Hyunsik

On Wed, Aug 13, 2014 at 9:56 PM, Christian Schwabe
<[email protected]> wrote:
> Hello guys,
>
> today I want to test the performance of Apache Tajo, MySQL and Postgresql
> with Apache jMeter.
> I've been followed these instructions:
>
> http://jmeter.apache.org/usermanual/build-db-test-plan.html
> http://jmeter.apache.org/usermanual/get-started.html#classpath
>
>
> Although I have held up to me these instructions, I get the following
> exception:
>
> 2014/08/13 14:15:27 INFO  - jmeter.engine.StandardJMeterEngine: Running the
> test!
> 2014/08/13 14:15:27 INFO  - jmeter.samplers.SampleEvent: List of
> sample_variables: []
> 2014/08/13 14:15:27 ERROR - jmeter.JMeter: Uncaught exception:
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.tajo.jdbc.TajoDriver
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:340)
> at
> org.apache.avalon.excalibur.datasource.ResourceLimitingJdbcDataSource.configure(ResourceLimitingJdbcDataSource.java:297)
> at
> org.apache.jmeter.protocol.jdbc.config.DataSourceElement.initPool(DataSourceElement.java:235)
> at
> org.apache.jmeter.protocol.jdbc.config.DataSourceElement.testStarted(DataSourceElement.java:108)
> at
> org.apache.jmeter.engine.StandardJMeterEngine.notifyTestListenersOfStart(StandardJMeterEngine.java:214)
> at
> org.apache.jmeter.engine.StandardJMeterEngine.run(StandardJMeterEngine.java:336)
> at java.lang.Thread.run(Thread.java:745)
>
> The exception to this point is pretty clear, but unfortunately not very
> effective.
> I copied following files into .\lib:
>
> tajo-common-0.9.0-SNAPSHOT.jar
> tajo-jdbc-0.9.0-SNAPSHOT.jar
> hadoop-common-2.4.0.jar
>
> and still get the above exception.
>
> My project file for Apache jMeter is attached to this e-mail to quickly
> import it for own testing.
>
> Has anyone ever worked with Apache jMeter and tested it with Apache Tajo?
>
>
> Best regards,
> Chris
>
>

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