[Pig Wiki] Trivial Update of "UDFManual" by jeremyhanna

[Apache Wiki <wi...@apache.org>]

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Pig Wiki" for change notification.

The "UDFManual" page has been changed by jeremyhanna.
http://wiki.apache.org/pig/UDFManual?action=diff&rev1=17&rev2=18

--------------------------------------------------

  
  Multiple `register` commands can be used in the same script. If the same fully-qualified function is present in multiple jars, the first occurrence will be used consistently with Java semantics.
  
- The name of the UDF has to be fully qualified with the package name or an error will be reported: `java.io.IOException: Cannot instantiate:UPPER`. Also, the function name is case sensitive (UPPER and upper are not the same). A UDF can take one or more parameters. The exact signature of the function should clear from its documentation.
+ The name of the UDF has to be fully qualified with the package name or an error will be reported: `java.io.IOException: Cannot instantiate:UPPER`. Also, the function name is case sensitive (UPPER and upper are not the same). A UDF can take one or more parameters. The exact signature of the function should be clear from its documentation.
  
  The function provided in this example takes an ASCII string and produces its uppercase version. If you are familiar with column transformation functions in SQL, you will recognize that UPPER fits this concept. However, as we will see later in the document, eval functions in Pig go beyond column transformation functions and include aggregate and filter functions.