Sorry, I should have mentioned I'm using hadoop version 0.18.1 and java 1.6.
Dan Benjamin wrote: > > I've got a simple hadoop job running on an EC2 cluster using the scripts > under src/contrib/ec2. The map tasks all fail with the following error: > > 08/10/07 15:11:00 INFO mapred.JobClient: Task Id : > attempt_200810071501_0001_m_000031_0, Status : FAILED > java.lang.RuntimeException: java.lang.NoSuchMethodException: > ManifestRetriever$Map.<init>() > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:80) > at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:33) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:58) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:82) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:223) > at > org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207) > Caused by: java.lang.NoSuchMethodException: > com.amazon.ec2.ebs.billing.ManifestRetriever$Map.<init>() > at java.lang.Class.getConstructor0(Class.java:2706) > at java.lang.Class.getDeclaredConstructor(Class.java:1985) > at > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:74) > > I tried adding an explicit (public) no-arg constructor to the > ManifestRetriever.Map class but this gives me the same error. Has anyone > encountered this problem before? > > -- View this message in context: http://www.nabble.com/NoSuchMethodException-when-running-Map-Task-tp19865280p19865371.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
