Pig Java UDF : ERROR 1066: Unable to open iterator for alias

[Divya Gehlot <di...@gmail.com>]

Pig Stack Trace
---------------
ERROR 1066: Unable to open iterator for alias C

org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
open iterator for alias C
at org.apache.pig.PigServer.openIterator(PigServer.java:892)
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.exec(Grunt.java:84)
at org.apache.pig.Main.run(Main.java:607)
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:606)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.io.IOException: Job terminated with anomalous status FAILED
at org.apache.pig.PigServer.openIterator(PigServer.java:884)
... 13 more
  Application Log
-------------------------------------------------------------------
Application application_1436453941326_0020 failed 2 times due to AM
Container for appattempt_1436453941326_0020_000002 exited with exitCode: 1
For more detailed output, check application tracking page:
http://quickstart.cloudera:8088/proxy/application_1436453941326_0020/Then,
click on links to logs of each attempt.
Diagnostics: Exception from container-launch.
Container id: container_1436453941326_0020_02_000001
Exit code: 1
Stack trace: ExitCodeException exitCode=1:
at org.apache.hadoop.util.Shell.runCommand(Shell.java:538)
at org.apache.hadoop.util.Shell.run(Shell.java:455)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
at
org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:211)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:302)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:82)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Container exited with a non-zero exit code 1
Failing this attempt. Failing the application.