Everything was fine with hadoop 1.x and pig 0.11. Recently I installed hadoop 2.2.0 and pig 0.12.0, and run some simple one line script : load some csv file data into a relation. The job is failed.
The error log message is given below: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Backend error message during job submission ------------------------------------------- Unexpected System Error Occured: java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.setupUdfEnvAndStores(PigOutputFormat.java:225) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.checkOutputSpecs(PigOutputFormat.java:186) at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:456) at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:342) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1268) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1265) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491) at org.apache.hadoop.mapreduce.Job.submit(Job.java:1265) at org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob.submit(ControlledJob.java:335) at org.apache.hadoop.mapreduce.lib.jobcontrol.JobControl.run(JobControl.java:240) at org.apache.pig.backend.hadoop20.PigJobControl.run(PigJobControl.java:121) at java.lang.Thread.run(Thread.java:722) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher$1.run(MapReduceLauncher.java:270) Pig Stack Trace --------------- ERROR 1066: Unable to open iterator for alias batting org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias batting at org.apache.pig.PigServer.openIterator(PigServer.java:880) at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:774) at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:173) at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69) at org.apache.pig.Main.run(Main.java:541) at org.apache.pig.Main.main(Main.java:156) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.apache.hadoop.util.RunJar.main(RunJar.java:212) Caused by: java.io.IOException: Job terminated with anomalous status FAILED at org.apache.pig.PigServer.openIterator(PigServer.java:872) ... 12 more ================================================================================ Any comments? thanks!
