java.lang.ClassNotFoundException

tip

This might be an issue with the file location in the Spark submit command. Try it with "spark-submit --master spark://master:7077 hello_world_from_pyspark.py {file location}"

tip

Check if you've set a name in Application -> Run. If you didn't, the generated XML is gonna have missing information and then this exception will be thrown.

tip

A few things cause this exception: 1) Check if you have all jars and if they're in the correct path when running. 2) Your classpath might be broken, you can define it in the command line with "java -cp yourClassPath" or at your IDE if you're using one.

tip

Needs to add netty-transport-native-epoll with a OS classifier to the classpath, it's not included in netty-all

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

  • GitHub comment 1359#132109887
    via GitHub by ilevans
    ,
  • Error create server
    via GitHub by douglaspedro
    ,
  • GitHub comment 1525#156225891
    via GitHub by sammy1000
    ,
  • Running example 13 as it is fails with Could not load driverClass org.postgresql.Driver java.lang.ClassNotFoundException: org.postgresql.Driver at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:186) at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:101) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:133) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014) at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32) at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547) [WARN] 16 Sep 01:21:10.763 PM com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0 [com.mchange.v2.c3p0.DriverManagerDataSource] Could not load driverClass org.postgresql.Driver which is not surprising because the intended classpath to find postgres.jar rem Put the path to your JDBC driver(s) in this variable @SET JDBC_CP=..\..\lib\postgres.jar "java" -cp "%QUARTZ_CP%;%JDBC_CP%" %QUARTZ_PROPS% %LOG4J_PROPS% org.quartz.examples.example13.ClusterExample %1 will not find it at Directory of C:\Terracotta\terracotta-ee-3.5.3-nightly-rev18716\quartz\lib 09/15/2011 11:34 AM <DIR> . 09/15/2011 11:34 AM <DIR> .. 01/18/2011 12:17 AM 608,376 c3p0-0.9.1.1.jar 04/21/2009 08:05 AM 15,071 jta-1.1.jar 01/09/2009 01:12 PM 367,444 log4j-1.2.14.jar 12/17/2010 12:32 PM 25,496 slf4j-api-1.6.1.jar 01/18/2011 12:17 AM 9,753 slf4j-log4j12-1.6.1.jar ============================================================================================ Now, it is unclear whether the example is telling the user to go get their own database and put their own jar there; if so it should be a lot more explicit than is currently the case at https://svn.terracotta.org/repo/quartz/trunk/examples/example13/clustering_readme.txt Furthermore the readme states that scripts to setup the database tables for various popular databases are included with quartz; however 1) It does not say where 2) I cannot find them So it seems like there's at least one issue of documentation for how/where to get the DB set up, and potentially one for us not including the needed jars/scripts to actually get things working.
    via by Yi Zhang,
  • JavaRoots: Driver Class Not Found Error In MULE
    via by Unknown author,
  • Running example 13 as it is fails with Could not load driverClass org.postgresql.Driver java.lang.ClassNotFoundException: org.postgresql.Driver at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:186) at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:101) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:133) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014) at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32) at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547) [WARN] 16 Sep 01:21:10.763 PM com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0 [com.mchange.v2.c3p0.DriverManagerDataSource] Could not load driverClass org.postgresql.Driver which is not surprising because the intended classpath to find postgres.jar rem Put the path to your JDBC driver(s) in this variable @SET JDBC_CP=..\..\lib\postgres.jar "java" -cp "%QUARTZ_CP%;%JDBC_CP%" %QUARTZ_PROPS% %LOG4J_PROPS% org.quartz.examples.example13.ClusterExample %1 will not find it at Directory of C:\Terracotta\terracotta-ee-3.5.3-nightly-rev18716\quartz\lib 09/15/2011 11:34 AM <DIR> . 09/15/2011 11:34 AM <DIR> .. 01/18/2011 12:17 AM 608,376 c3p0-0.9.1.1.jar 04/21/2009 08:05 AM 15,071 jta-1.1.jar 01/09/2009 01:12 PM 367,444 log4j-1.2.14.jar 12/17/2010 12:32 PM 25,496 slf4j-api-1.6.1.jar 01/18/2011 12:17 AM 9,753 slf4j-log4j12-1.6.1.jar ============================================================================================ Now, it is unclear whether the example is telling the user to go get their own database and put their own jar there; if so it should be a lot more explicit than is currently the case at https://svn.terracotta.org/repo/quartz/trunk/examples/example13/clustering_readme.txt Furthermore the readme states that scripts to setup the database tables for various popular databases are included with quartz; however 1) It does not say where 2) I cannot find them So it seems like there's at least one issue of documentation for how/where to get the DB set up, and potentially one for us not including the needed jars/scripts to actually get things working.
    via by Yi Zhang,
  • HSQL Driver not working?
    via Stack Overflow by chntgomez
    ,
    • java.lang.ClassNotFoundException: org.hsqldb.jdbcDriver at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.mchange.v2.c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:143) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:159) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:161) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:147) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:202) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) at com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)

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