failed states

hadoop-yarn-grep-failure

failed: [silo-03] => {"changed": true, "cmd": "su - hdfs -c \"export HADOOP_MAPRED_HOME=/usr/lib/hadoop-mapreduce && hadoop jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar grep /source-for-mapreduce-test /outputfile 'hello'\" ", "delta": "0:00:11.452524", "end": "2014-04-10 20:01:31.965314", "rc": 255, "start": "2014-04-10 20:01:20.512790"}
stderr: 14/04/10 20:01:22 INFO client.RMProxy: Connecting to ResourceManager at silo-03/33.12.34.53:8032
14/04/10 20:01:23 WARN mapreduce.JobSubmitter: No job jar file set.  User classes may not be found. See Job or Job#setJar(String).
14/04/10 20:01:23 INFO input.FileInputFormat: Total input paths to process : 1
14/04/10 20:01:23 INFO mapreduce.JobSubmitter: number of splits:1
14/04/10 20:01:23 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1397160042836_0001
14/04/10 20:01:23 INFO mapred.YARNRunner: Job jar is not present. Not adding any jar to the list of resources.
14/04/10 20:01:24 INFO impl.YarnClientImpl: Submitted application application_1397160042836_0001
14/04/10 20:01:24 INFO mapreduce.Job: The url to track the job: http://silo-03:8088/proxy/application_1397160042836_0001/
14/04/10 20:01:24 INFO mapreduce.Job: Running job: job_1397160042836_0001
14/04/10 20:01:31 INFO mapreduce.Job: Job job_1397160042836_0001 running in uber mode : false
14/04/10 20:01:31 INFO mapreduce.Job:  map 0% reduce 0%
14/04/10 20:01:31 INFO mapreduce.Job: Job job_1397160042836_0001 failed with state FAILED due to: Application application_1397160042836_0001 failed 2 times due to AM Container for appattempt_1397160042836_0001_000002 exited with  exitCode: 1 due to: Exception from container-launch: org.apache.hadoop.util.Shell$ExitCodeException:
org.apache.hadoop.util.Shell$ExitCodeException:
	at org.apache.hadoop.util.Shell.runCommand(Shell.java:505)
	at org.apache.hadoop.util.Shell.run(Shell.java:418)
	at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:650)
	at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:195)
	at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:283)
	at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:79)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)

Container exited with a non-zero exit code 1
.Failing this attempt.. Failing the application.
14/04/10 20:01:31 INFO mapreduce.Job: Counters: 0
14/04/10 20:01:31 INFO client.RMProxy: Connecting to ResourceManager at silo-03/33.12.34.53:8032
14/04/10 20:01:31 WARN mapreduce.JobSubmitter: No job jar file set.  User classes may not be found. See Job or Job#setJar(String).
14/04/10 20:01:31 INFO mapreduce.JobSubmitter: Cleaning up the staging area /user/hdfs/.staging/job_1397160042836_0002
14/04/10 20:01:31 WARN security.UserGroupInformation: PriviledgedActionException as:hdfs (auth:SIMPLE) cause:org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://spacestation/user/hdfs/grep-temp-1278052657
org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://spacestation/user/hdfs/grep-temp-1278052657
	at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:285)
	at org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat.listStatus(SequenceFileInputFormat.java:59)
	at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:340)
	at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:493)
	at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:510)
	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:394)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1295)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1292)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1292)
	at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1313)
	at org.apache.hadoop.examples.Grep.run(Grep.java:92)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
	at org.apache.hadoop.examples.Grep.main(Grep.java:101)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
	at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
	at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
	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:606)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:212)

Changing YARN_HOME to HADOOP_YARN_HOME in yarn-site.xml remedies all things. HADOOP_YARN_HOME supersedes the United States of America as humanity's last best hope. Achievement unlocked.

Just make sure your symlinks have symlinks to other symlinks that symlink to a shell script that sets up all those environment variables and then executes another shell script that is really a symlink to java.