hi,i have copied chukwa-hadoop-*-client.jar and json.jar toHADOOP_HOME/lib, and
restarted hadoop, but the MR job lanched by demux runs error:
task error is as follows:
Error: java.lang.ClassNotFoundException: org.json.JSONException
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at
org.apache.hadoop.chukwa.extraction.demux.processor.mapper.MapProcessorFactory.getProcessor(MapProcessorFactory.java:40)
at
org.apache.hadoop.chukwa.extraction.demux.Demux$MapClass.map(Demux.java:95)
at
org.apache.hadoop.chukwa.extraction.demux.Demux$MapClass.map(Demux.java:64)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
at org.apache.hadoop.mapred.Child.main(Child.java:170)
At 2011-07-01 13:17:42，"Eric Yang" <[email protected]> wrote:
>Did you copy chukwa-hadoop-*-client.jar and json.jar to
>HADOOP_HOME/lib, and restart hadoop?
>
>regards,
>Eric
>
>2011/6/30 孙长 <[email protected]>:
>> Hi, I am using chukwa 0.4 , and i start a collector and a agent on two
>> nodes, but i only got system metrics in mysql, no hadoop metrics like jvm,
>> dfs, mapred
>> dbAdmin.sh is running background, log4j.properties
>> and hadoop-metrics.properties in hadoop conf dir are set according to user
>> guide
>> no dfs, mapred logs in chukwa/log/metrics dir.
>> thank you ~
>>
>>
