Can you open a JIRA please, would be great if you have a trivial trigger to help us repro (so whoever goes to fix it doesnt need to write a fake trigger class)?
https://issues.apache.org/jira/browse/CASSANDRA On Thu, Dec 7, 2017 at 10:34 AM, tsubasa.nar...@us.fujitsu.com < tsubasa.nar...@us.fujitsu.com> wrote: > Hi, > > > > Thanks for your replay. > > I put jar file under conf/triggers before starting Cassandra then I could > found following log > > INFO [OptionalTasks:1] 2017-11-30 03:55:43,541 CustomClassLoader.java:87 > - Loading new jar /home/tnarita/cassandra/conf/triggers/TestTrigger.jar > > > > It looks like my jar files is added to Cassandra’s classloader but when > Cassandra call my class, sometimes ClassNotFoundException happen. > > If I reboot Cassandra , I don’t get ClassNotFoundException and cassandara > can call my class. > > So, I suspect function related to loading jar file have bugs. > > > > Thanks, > > Tsubasa Narita > > > > *From:* Jacques-Henri Berthemet [mailto:jacques-henri. > berthe...@genesys.com] > *Sent:* Wednesday, December 6, 2017 11:56 PM > *To:* user@cassandra.apache.org > *Subject:* RE: ClassNotFoundException when trigger is fired > > > > Hi, > > > > I have a custom secondary index that works well with Cassandra, I put the > jar file in Cassandra’s lib folder before starting Cassandra, maybe you > can try to do the same thing? > > > > I don’t think that Cassandra’s class loader is dynamic, you need to have > your jars in the classpath before starting Cassandra. > > > > Regards, > > *--* > > *Jacques-Henri Berthemet* > > > > *From:* tsubasa.nar...@us.fujitsu.com [mailto:Tsubasa.Narita@us. > fujitsu.com <tsubasa.nar...@us.fujitsu.com>] > *Sent:* mercredi 6 décembre 2017 19:49 > *To:* user@cassandra.apache.org > *Subject:* ClassNotFoundException when trigger is fired > > > > Dear All > > > > I use cassandra trigger to detect data change in DB and usually it works. > > But sometime I get ClassNotFoundException when trigger is fired. > > > > Following is what I did > > 1. create class which implement ITrigger interface. ex)class name is > TestTrigger.java > > 2. create jar file and put it under conf/triggers ex)jar file name is > TestTrigger.jar > > 3. start cassandra > > 4. I can find following log. Looks like jar file is loaded successfully > > INFO [OptionalTasks:1] 2017-11-30 03:55:43,541 CustomClassLoader.java:87 > - Loading new jar /home/tnarita/cassandra/conf/triggers/TestTrigger.jar > > 5. login cql and create trigger for test table. > > 6. insert value into test table > > 7. trigger is fired. > > 8. I got ClassNotFoundException. following is the log > > > > java.lang.RuntimeException: Exception while executing trigger on table > with ID: 1cb6a5a0-cb00-11e7-a737-49047aea57a8 > > at org.apache.cassandra.triggers.TriggerExecutor. > executeInternal(TriggerExecutor.java:241) ~[apache-cassandra-3.9.jar:3.9] > > at > org.apache.cassandra.triggers.TriggerExecutor.execute(TriggerExecutor.java:119) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.service.StorageProxy. > mutateWithTriggers(StorageProxy.java:823) ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.cql3.statements. > ModificationStatement.executeWithoutCondition(ModificationStatement.java:431) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.cql3.statements. > ModificationStatement.execute(ModificationStatement.java:417) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.cql3.QueryProcessor. > processStatement(QueryProcessor.java:188) ~[apache-cassandra-3.9.jar:3.9] > > at > org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:219) > ~[apache-cassandra-3.9.jar:3.9] > > at > org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:204) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.transport.messages. > QueryMessage.execute(QueryMessage.java:115) ~[apache-cassandra-3.9.jar:3. > 9] > > at > org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513) > [apache-cassandra-3.9.jar:3.9] > > at > org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407) > [apache-cassandra-3.9.jar:3.9] > > at io.netty.channel.SimpleChannelInboundHandler. > channelRead(SimpleChannelInboundHandler.java:105) > [netty-all-4.0.39.Final.jar:4.0.39.Final] > > at io.netty.channel.AbstractChannelHandlerContext. > invokeChannelRead(AbstractChannelHandlerContext.java:366) > [netty-all-4.0.39.Final.jar:4.0.39.Final] > > at io.netty.channel.AbstractChannelHandlerContext. > access$600(AbstractChannelHandlerContext.java:35) > [netty-all-4.0.39.Final.jar:4.0.39.Final] > > at io.netty.channel.AbstractChannelHandlerContext$7.run( > AbstractChannelHandlerContext.java:357) [netty-all-4.0.39.Final.jar:4. > 0.39.Final] > > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > [na:1.8.0_66] > > at org.apache.cassandra.concurrent. > AbstractLocalAwareExecutorService$FutureTask.run( > AbstractLocalAwareExecutorService.java:164) [apache-cassandra-3.9.jar:3.9] > > at > org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) > [apache-cassandra-3.9.jar:3.9] > > at java.lang.Thread.run(Thread.java:745) [na:1.8.0_66] > > Caused by: java.lang.ClassNotFoundException: com.test.TestTrigger > > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > ~[na:1.8.0_66] > > at org.apache.cassandra.triggers.CustomClassLoader. > loadClassInternal(CustomClassLoader.java:118) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.triggers. > CustomClassLoader.loadClass(CustomClassLoader.java:103) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.triggers.TriggerExecutor. > loadTriggerInstance(TriggerExecutor.java:254) > ~[apache-cassandra-3.9.jar:3.9] > > at org.apache.cassandra.triggers.TriggerExecutor. > executeInternal(TriggerExecutor.java:226) ~[apache-cassandra-3.9.jar:3.9] > > ... 18 common frames omitted > > > > > > When I get this issue, restarting cassandra resolve this issue. > > TestTrigger.java output dummy log in static initializer. When I don't get > this issue, I can find dummy log after Step4. > > But when I get this issue, I can't find it. > > I checked system.log and debug.log but there weren't any error log which > indicate jar loading failure. > > > > I would like to know whether this is known issue or not. > > Does anyone know this issue? > > > > Thanks > > Tsubasa Narita >
