It works with --driver-class-path?
Please see
https://eradiating.wordpress.com/2015/04/17/using-spark-data-sources-to-load-data-from-postgresql/
--- Original Message ---
From: "JaeSung Jun" <jaes...@gmail.com>
Sent: April 21, 2015 1:05 AM
To: dev@spark.apache.org
Subject: Can't find postgresql jdbc driver when using external datasource
Hi,
I tried to get external data base table running sitting on postgresql.
i've got java.lang.ClassNotFoundException even if i added driver jar using
--jars option like followings :
is it class loader hierarchy problem or any idea?
thanks
-----------------
spark-sql --jars ../lib/postgresql-9.4-1200.jdbc41.jar
spark-sql> CREATE TEMPORARY TABLE uusr
> USING org.apache.spark.sql.jdbc
> OPTIONS (
> url
"jdbc:postgresql://localhost/spark_db?user=postgres&password=password",
> driver "org.postgresql.Driver",
> dbtable "uusr"
> );
..
java.lang.ClassNotFoundException: org.postgresql.Driver
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)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:191)
at
org.apache.spark.sql.jdbc.DefaultSource.createRelation(JDBCRelation.scala:97)
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