Jackson Chung created CASSANDRA-6258:
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Summary: Need the root clause in FBUtilities.classForName when
there is exception loading class
Key: CASSANDRA-6258
URL: https://issues.apache.org/jira/browse/CASSANDRA-6258
Project: Cassandra
Issue Type: Bug
Reporter: Jackson Chung
We have a custom snitch that works in 1.1, but the same does not work in 1.2 .
It throws a ConfigurationException:
{panel}
ERROR 11:39:37,936 Fatal configuration error
org.apache.cassandra.exceptions.ConfigurationException: Unable to find snitch
class 'com.apigee.cassandra.OldEC2Snitch'
at
org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:432)
at
org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:444)
at
org.apache.cassandra.config.DatabaseDescriptor.createEndpointSnitch(DatabaseDescriptor.java:530)
at
org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescriptor.java:350)
at
org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:126)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:216)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:447)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:490)
Unable to find snitch class 'com.apigee.cassandra.OldEC2Snitch'
{panel}
However the above exception does not help us understand what's wrong (jar is in
the classpath and readable). I've to add the root clause to the
ConfigurationException to see the real problem:
{panel}
ERROR 11:42:20,020 Fatal configuration error
org.apache.cassandra.exceptions.ConfigurationException: Unable to find snitch
class 'com.apigee.cassandra.OldEC2Snitch'
at
org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:432)
at
org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:444)
at
org.apache.cassandra.config.DatabaseDescriptor.createEndpointSnitch(DatabaseDescriptor.java:530)
at
org.apache.cassandra.config.DatabaseDescriptor.loadYaml(DatabaseDescriptor.java:350)
at
org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:126)
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:216)
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:447)
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:490)
Caused by: java.lang.NoClassDefFoundError:
org/apache/cassandra/config/ConfigurationException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at
org.apache.cassandra.utils.FBUtilities.classForName(FBUtilities.java:424)
... 7 more
Caused by: java.lang.ClassNotFoundException:
org.apache.cassandra.config.ConfigurationException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 10 more
Unable to find snitch class 'com.apigee.cassandra.OldEC2Snitch'
{panel}
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