UDF defined with argument causes class instantiation exception
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Key: PIG-552
URL: https://issues.apache.org/jira/browse/PIG-552
Project: Pig
Issue Type: Bug
Affects Versions: types_branch
Reporter: Christopher Olston
I'm doing:
define myFunc myFunc('blah');
b = foreach a generate myFunc(*);
Pig parses it, but fails when it tries to run it on hadoop (I'm using "local"
mode). It tries to invoke the class loader on "myFunc('blah')" instead of on
"myFunc", which causes an exception.
The bug seems to stem from this part of JobControlCompiler.getJobConf():
if(mro.UDFs.size()==1){
String compFuncSpec = mro.UDFs.get(0);
Class comparator =
PigContext.resolveClassName(compFuncSpec);
if(ComparisonFunc.class.isAssignableFrom(comparator)) {
jobConf.setMapperClass(PigMapReduce.MapWithComparator.class);
jobConf.setReducerClass(PigMapReduce.ReduceWithComparator.class);
jobConf.set("pig.reduce.package",
ObjectSerializer.serialize(pack));
jobConf.set("pig.usercomparator", "true");
jobConf.setOutputKeyClass(NullableTuple.class);
jobConf.setOutputKeyComparatorClass(comparator);
}
} else {
jobConf.set("pig.sortOrder",
ObjectSerializer.serialize(mro.getSortOrder()));
}
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