Hi My input data format is (message,NIL,2015-07-01,22:58:53.66,E,machine.com.name,12,0xd6,String,String ,0,0.0,key=value&key=123456789&key=value&key=US&key=COMPANY&key=MESSAGE&key=123456789&key=String&key=String&Key=String&Key=String) I have written Java UDF as below to parse last string of input data
package com.pig.udf; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.Map; import org.apache.pig.EvalFunc; import org.apache.pig.data.Tuple; public class PigUDF extends EvalFunc<Map> { @Override public Map<String, String> exec(Tuple input) throws IOException { // If tuple is null, has fewer than 3 values, or has an even number of // values if (input == null || input.size() < 3 || (input.size() % 2 == 0)) { throw new IOException("Incorrect number of values."); } String source = (String) input.get(0); System.out.println("input Source"+source); String delim = (input.size() > 1) ? (String) input.get(1) : "&"; int length = (input.size() > 2) ? (Integer) input.get(2) : 0; if (source == null || delim == null) { return null; } String[] splits = source.split(delim, length); System.out.println("Splits"+ splits); ArrayList<String> arrayList = new ArrayList<String>( Arrays.asList(splits)); Map<String, String> map = new HashMap<String, String>(); for (String keyValue : arrayList) { int end = keyValue.indexOf('='); if (end != -1) { map.put(keyValue.substring(0, end), keyValue.substring(end + 1)); } } System.out.println("map"+map); return map; } } When I am running the my Pig Script with above Java UDF I am getting below error 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. My Script is running fine without Java UDF function and giving me outfile too. The issue arises when I include Java UDF in my Pig Script. There is no java version mismatch between my Java UDF and machine running Pig Any pointers will be appreciated