Function (UDF) automatic namespace resolution is really needed
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Key: PIG-863
URL: https://issues.apache.org/jira/browse/PIG-863
Project: Pig
Issue Type: Improvement
Reporter: David Ciemiewicz
The Apache PiggyBank documentation says that to reference a function, I need to
specify a function as:
org.apache.pig.piggybank.evaluation.string.UPPER(text)
As in the example:
{code}
REGISTER /public/share/pig/contrib/piggybank/java/piggybank.jar ;
TweetsInaug = FILTER Tweets BY
org.apache.pig.piggybank.evaluation.string.UPPER(text) MATCHES
'.*(INAUG|OBAMA|BIDEN|CHENEY|BUSH).*' ;
{code}
Why can't we implement automatic name space resolution as so we can just
reference UPPER without namespace qualifiers?
{code}
REGISTER /public/share/pig/contrib/piggybank/java/piggybank.jar ;
TweetsInaug = FILTER Tweets BY UPPER(text) MATCHES
'.*(INAUG|OBAMA|BIDEN|CHENEY|BUSH).*' ;
{code}
I know about the workaround:
{code}
define org.apache.pig.piggybank.evaluation.string.UPPER UPPER
{code}
But this is really a pain to do if I have lots of functions.
Just warn if there is a collision and suggest I use the "define" workaround in
the warning messages.
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