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
