New UDFs for piggybank (Bin, Decode, LookupInFiles, RegexExtract, RegexMatch,
HashFVN, DiffDate)
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Key: PIG-885
URL: https://issues.apache.org/jira/browse/PIG-885
Project: Pig
Issue Type: New Feature
Reporter: Daniel Dai
Priority: Minor
Bunch of UDFs:
1. Bin -- Converts a continuous value into discrete values
2. Decode -- Converts a given attribute or expression into another string
value, based on the value of the source attribute
3. LookupInFiles -- Check for the existence of an expression in a serial of
text files
4. RegexExtract and RegexMatch -- Similar to perl regexes
5. HashFVN -- An implementation of FNV hash
6. DiffDate -- Caculate the number of days in between
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