piggybank: XMLLoader will always add an extra empty tuple even if no tags are
matched
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Key: PIG-1839
URL: https://issues.apache.org/jira/browse/PIG-1839
Project: Pig
Issue Type: Bug
Affects Versions: 0.8.0, 0.7.0, 0.9.0
Reporter: Vivek Padmanabhan
Assignee: Vivek Padmanabhan
The XMLLoader in piggy bank always add an empty tuple. Everytime this has to be
filtered out. Instead the same could be done by the loader itself.
Consider the below script :
a= load 'a.xml' using org.apache.pig.piggybank.storage.XMLLoader('name');
dump a;
b= filter a by $0 is not null;
dump b;
The output of first dump is :
(<name> foobar </name>)
(<name> foo </name>)
(<name> justname </name>)
()
The output of second dump is :
(<name> foobar </name>)
(<name> foo </name>)
(<name> justname </name>)
Again another case is if I dont have a matching tag , still the loader will
generate the empty tuple.
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