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Package org.apache.pig.builtin

Added Classes
FuncUtils  
OrcStorage A load function and store function for ORC file.
SPRINTF Formatted strings using java.util.Formatter See http://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html ex: SPRINTF('%2$10s %1$-17s %2$ 10d %2$8x %3$10.3f %4$1TFT%
STRSPLITTOBAG Wrapper around Java's String.split
input tuple: first column is assumed to have a string to split;
the optional second column is assumed to have the delimiter or regex to split on;
if not provided it's assumed to be '\s' (space)
the optional third column may provide a limit to the number of results.
If limit is not provided 0 is assumed as per Java's split().
UniqueID UniqueID generates a unique id for each records in the job.
 

Changed Classes
ABS ABS implements a binding to the Java function Math.abs(double) for computing the absolute value of the argument.
ARITY Find the number of fields in a tuple.
AddDuration

AddDuration returns the result of a DateTime object plus a Duration object

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Duration Format: http://en.wikipedia.org/wiki/ISO_8601#Durations

Assert  
AvroStorage Pig UDF for reading and writing Avro data.
BagSize This method should never be used directly use SIZE
BagToString Flatten a bag into a string.
BagToTuple Flatten a bag into a tuple.
Base base class for math udfs
BigDecimalAbs  
BigIntegerAbs  
CONCAT Generates the concatenation of two or more arguments.
ConstantSize This method should never be used directly use SIZE
CubeDimensions Produces a DataBag with all combinations of the argument tuple members as in a data cube.
CurrentTime  
DIFF DIFF takes two bags as arguments and compares them.
DaysBetween

DaysBetween returns the number of days between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

Distinct Find the distinct set of tuples in a bag.
DoubleRound Given a single data atom it Returns the closest long to the argument.
DoubleRoundTo ROUND_TO safely rounds a number to a given precision by using an intermediate BigDecimal.
ENDSWITH Pig UDF to test input tuple.get(0) against tuple.get(1) to determine if the first argument ends with the string in the second.
EqualsIgnoreCase Compares two Strings ignoring case considerations.
FloatAbs  
FloatRound ROUND implements a binding to the Java function Math.round(float) Given a single data atom it Returns the closest long to the argument.
FloatRoundTo ROUND_TO safely rounds a number to a given precision by using an intermediate BigDecimal.
GetDay GetDay extracts the day of a month from a DateTime object.
GetHour GetHour extracts the hour of a day from a DateTime object.
GetMilliSecond GetSecond extracts the millisecond of a second from a DateTime object.
GetMinute GetMinute extracts the minute of an hour from a DateTime object.
GetMonth GetMonth extracts the month of a year from a DateTime object.
GetSecond GetSecond extracts the second of a minute from a DateTime object.
GetWeek GetMonth extracts the week of a week year from a DateTime object.
GetWeekYear GetMonth extracts the week year from a DateTime object.
GetYear GetYear extracts the year from a DateTime object.
HoursBetween

HoursBetween returns the number of hours between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

INDEXOF INDEXOF implements eval function to search for a string Example: A = load 'mydata' as (name); B = foreach A generate INDEXOF(name " ");
INVERSEMAP This UDF accepts a Map as input with values of any primitive data type.
IntAbs ABS implements a binding to the Java function Math.abs(int) for computing the absolute value of the argument.
IsEmpty Determine whether a bag or map is empty.
JsonLoader A loader for data stored using JsonStorage This is not a generic JSON loader.
JsonStorage A JSON Pig store function.
KEYSET This UDF takes a Map and returns a Bag containing the keyset.
LAST_INDEX_OF string.INSTR implements eval function to search for the last occurrence of a string Returns null on error Example: A = load 'mydata' as (name); B = foreach A generate LASTINDEXOF(name " ");
LCFIRST lower-case the first character of a string
LOWER LOWER implements eval function to convert a string to lower case Example: A = load 'mydata' as (name); B = foreach A generate LOWER(name);
LTRIM Returns a string with only leading whitespace omitted.
LongAbs  
MapSize This method should never be used directly use SIZE
MilliSecondsBetween

MilliSecondsBetween returns the number of milliseconds between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

MinutesBetween

MinutesBetween returns the number of minutes between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

MonthsBetween

MonthsBetween returns the number of months between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

PluckTuple This is a UDF which allows the user to specify a string prefix and then filter for the columns in a relation that begin with that prefix.
REGEX_EXTRACT
Syntax:
String RegexExtract(String expression String regex int match_index).
Input:
expression-source string.
regex-regular expression.
match_index-index of the group to extract.
Output:
extracted group if fail return null.
Matching strategy:
Try to only match the first sequence by using Matcher#find() instead of Matcher#matches() (default useMatches=false).
DEFINE NON_GREEDY_EXTRACT REGEX_EXTRACT('true');
REGEX_EXTRACT_ALL
Syntax:
String RegexExtractAll(String expression String regex).
Input:
expression-source string.
regex-regular expression.
Output:
A tuple of matched strings.
Matching strategy:
Trying to match the entire input by using Matcher#matches() instead of Matcher#find() (default useMatches=true).
DEFINE GREEDY_EXTRACT REGEX_EXTRACT_ALL('false');
REPLACE REPLACE implements eval function to replace part of a string.
ROUND ROUND implements a binding to the Java function Math.round(double) Given a single data atom it Returns the closest long to the argument.
ROUND_TO ROUND_TO safely rounds a number to a given precision by using an intermediate BigDecimal.
RTRIM Returns a string with only tailing whitespace omitted.
RollupDimensions Produces a DataBag with hierarchy of values (from the most detailed level of aggregation to most general level of aggregation) of the specified dimensions For example (a b c) will produce the following bag:
SIZE Generates the size of the argument passed to it.
STARTSWITH Pig UDF to test input tuple.get(0) against tuple.get(1) to determine if the first argument starts with the string in the second.
STRSPLIT Wrapper around Java's String.split
input tuple: first column is assumed to have a string to split;
the optional second column is assumed to have the delimiter or regex to split on;
if not provided it's assumed to be '\s' (space)
the optional third column may provide a limit to the number of results.
If limit is not provided 0 is assumed as per Java's split().
SUBSTRING SUBSTRING implements eval function to get a part of a string.
SUBTRACT SUBTRACT takes two bags as arguments and returns a new bag composed of tuples of first bag not in the second bag.
If null bag arguments are replaced by empty bags.
SecondsBetween

SecondsBetween returns the number of seconds between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

StringConcat This method should never be used directly use CONCAT
StringSize This method should never be used directly use SIZE
SubtractDuration

SubtractDuration returns the result of a DateTime object plus a Duration object

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Duration Format: http://en.wikipedia.org/wiki/ISO_8601#Durations

TOBAG This class takes a list of items and puts them into a bag T = foreach U generate TOBAG($0 $1 $2); It's like saying this: T = foreach U generate {($0) ($1) ($2)} All arguments that are not of tuple type are inserted into a tuple before being added to the bag.
TOKENIZE Given a chararray as an argument this method will split the chararray and return a bag with a tuple for each chararray that results from the split.
TOMAP This class makes a map out of the parameters passed to it T = foreach U generate TOMAP($0 $1 $2 $3); It generates a map $0->1 $2->$3
TOP Top UDF accepts a bag of tuples and returns top-n tuples depending upon the tuple field value of type long.
TOP.Final  
TOP.Initial  
TOP.Intermed  
TOTUPLE This class makes a tuple out of the parameter T = foreach U generate TOTUPLE($0 $1 $2); It generates a tuple containing $0 $1 and $2
TRIM Returns a string with leading and trailing whitespace omitted.
ToDate

ToDate converts the ISO or the customized string or the Unix timestamp to the DateTime object.

ToDate2ARGS This method should never be used directly use ToDate
ToDate3ARGS This method should never be used directly use ToDate
ToDateISO This method should never be used directly use ToDate
ToMilliSeconds

ToMilliSeconds converts the DateTime to the number of milliseconds that have passed since January 1 1970 00:00:00.000 GMT.

ToString

ToString converts the DateTime object of the ISO or the customized string.

ToUnixTime

ToUnixTime converts the DateTime to the Unix Time Long

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601
  • Unix Time: http://en.wikipedia.org/wiki/Unix_time

TupleSize This method should never be used directly use SIZE
UCFIRST upper-case the first character of a string
UPPER UPPER implements eval function to convert a string to upper case Example: A = load 'mydata' as (name); B = foreach A generate UPPER(name);
VALUELIST This UDF takes a Map and returns a Bag containing the values from map.
VALUESET This UDF takes a Map and returns a Tuple containing the value set.
WeeksBetween

WeeksBetween returns the number of weeks between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

YearsBetween

YearsBetween returns the number of years between two DateTime objects

  • Jodatime: http://joda-time.sourceforge.net/
  • ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601