Chhaya, Thanks for your help. I have followed your instruction, put the particular jar(flume-ng-log4jappender-1.3.1.jar) in my CLASSPATH also, but it still does not work, same error.
2013/1/14 Chhaya Vishwakarma <[email protected]> > Place that particular jar also.it will work**** > > ** ** > > *From:* Dongliang Sun [mailto:[email protected]] > *Sent:* Monday, January 14, 2013 10:55 AM > *To:* Chhaya Vishwakarma; [email protected] > *Subject:* Re: Could not instantiate class > org.apache.flume.clients.log4jappender**** > > ** ** > > Actually I have append the FLUME_HOME/lib/ to my CLASSPATH.**** > > Whether there is some problem in my PIG log4j.properties?**** > > Do you have any experience using log4jappender on PIG?**** > > Thanks,**** > > Dongliang**** > > ** ** > > 2013/1/14 Chhaya Vishwakarma <[email protected]>**** > > Put > flume-log4j-appender<https://repository.cloudera.com/content/repositories/releases/com/cloudera/flume-log4j-appender/0.9.4-cdh3u1/flume-log4j-appender-0.9.4-cdh3u1.jar>.jar > in CLASSPATH. Jar can be found in FLUME_HOME/lib/**** > > **** > > *From:* 孙东亮 [mailto:[email protected]] > *Sent:* Monday, January 14, 2013 8:55 AM > *To:* [email protected] > *Subject:* Could not instantiate class > org.apache.flume.clients.log4jappender**** > > **** > > I'm a newbie for the Flume, and I just set up flume for a test. > I want to use the log4jappender to get log info from PIG scripts, the > log4j.properties is:**** > > log4j.appender.flume = org.apache.flume.clients.log4jappender.Log4jAppender > **** > > log4j.appender.flume.Hostname = localhost **** > > log4j.appender.flume.Port = 41414 **** > > log4j.logger.org.apache.pig=DEBUG,flume**** > > And for the flume.config: **** > > a1.sources = r1 **** > > a1.sinks = k1 **** > > a1.channels = c1 **** > > **** > > # Describe/configure the source**** > > a1.sources.r1.type = avro **** > > a1.sources.r1.bind = localhost **** > > a1.sources.r1.port = 41414 **** > > **** > > # Describe the sink **** > > a1.sinks.k1.type = logger **** > > # Use a channel which buffers events in memory **** > > a1.channels.c1.type = memory **** > > a1.channels.c1.capacity = 1000 **** > > a1.channels.c1.transactionCapacity = 100 **** > > **** > > # Bind the source and sink to the channel **** > > a1.sources.r1.channels = c1 **** > > a1.sinks.k1.channel = c1 **** > > But I got the following error when run a pig script: > java.lang.ClassNotFoundException: > org.apache.flume.clients.log4jappender.Log4jAppender > 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) > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:169) > at org.apache.log4j.helpers.Loader.loadClass(Loader.java:179) > at > org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:320) > at > org.apache.log4j.helpers.OptionConverter.instantiateByKey(OptionConverter.java:121) > at > org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:664) > at > org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:647) > at > org.apache.log4j.PropertyConfigurator.parseCatsAndRenderers(PropertyConfigurator.java:568) > at > org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:442) > at > org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:367) > at org.apache.pig.Main.configureLog4J(Main.java:678) > at org.apache.pig.Main.run(Main.java:337) > at org.apache.pig.Main.main(Main.java:111) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.util.RunJar.main(RunJar.java:156) > log4j:ERROR Could not instantiate appender named "flume".**** > > Could you please help me find what I miss or where is incorrect for the > configuration.**** > > Thanks a lot! > Dongliang**** > > ** ** > ------------------------------ > > The contents of this e-mail and any attachment(s) may contain confidential > or privileged information for the intended recipient(s). Unintended > recipients are prohibited from taking action on the basis of information in > this e-mail and using or disseminating the information, and must notify the > sender and delete it from their system. L&T Infotech will not accept > responsibility or liability for the accuracy or completeness of, or the > presence of any virus or disabling code in this e-mail"**** > > ** ** >
