Hi, I tried to run a simple test with pipes, but it crashes. java.lang.Exception: java.lang.NullPointerException at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:403) Caused by: java.lang.NullPointerException at org.apache.hadoop.mapred.pipes.Application.<init>(Application.java:104) at org.apache.hadoop.mapred.pipes.PipesMapRunner.run(PipesMapRunner.java:69) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:429) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:235) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) 13/12/13 16:38:03 INFO mapreduce.Job: Job job_local1570213319_0001 running in uber mode : false 13/12/13 16:38:03 INFO mapreduce.Job: map 0% reduce 0% 13/12/13 16:38:03 INFO mapreduce.Job: Job job_local1570213319_0001 failed with state FAILED due to: NA 13/12/13 16:38:03 INFO mapreduce.Job: Counters: 0 Exception in thread "main" java.io.IOException: Job failed! at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:836) at org.apache.hadoop.mapred.pipes.Submitter.runJob(Submitter.java:264) at org.apache.hadoop.mapred.pipes.Submitter.run(Submitter.java:503) at org.apache.hadoop.mapred.pipes.Submitter.main(Submitter.java:518)
The line Application.java:104 is: byte[] password = jobToken.getPassword(); so jobToken seems to be null. It does not depend upon c++ code, since the error occurs before it is launched. I run it on Ubuntu 12.04 32 bit using the binary tarball. Any idea why it doesn't work? -- Mauro
