Uses of Class
org.apache.pig.LoadFunc

Packages that use LoadFunc

org.apache.pig	Public interfaces and classes for Pig.
org.apache.pig.backend.hadoop.accumulo
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
org.apache.pig.backend.hadoop.hbase
org.apache.pig.builtin	This package contains builtin Pig UDFs.
org.apache.pig.builtin.mock
org.apache.pig.impl.builtin
org.apache.pig.impl.io
org.apache.pig.impl.util
org.apache.pig.newplan.logical.relational
org.apache.pig.piggybank.storage
org.apache.pig.piggybank.storage.apachelog
org.apache.pig.piggybank.storage.partition

Uses of LoadFunc in org.apache.pig

Subclasses of LoadFunc in org.apache.pig

class	FileInputLoadFunc This class provides an implementation of OrderedLoadFunc interface which can be optionally re-used by LoadFuncs that use FileInputFormat, by having this as a super class
class	LoadFuncMetadataWrapper Convenience class to extend when decorating a class that extends LoadFunc and implements LoadMetadata.
class	LoadFuncWrapper Convenience class to extend when decorating a LoadFunc.

Methods in org.apache.pig that return LoadFunc

protected LoadFunc

LoadFuncWrapper.loadFunc()

Methods in org.apache.pig with parameters of type LoadFunc

protected void

LoadFuncWrapper.setLoadFunc(LoadFunc loadFunc) The wrapped LoadFunc object must be set before method calls are made on this object.

Uses of LoadFunc in org.apache.pig.backend.hadoop.accumulo

Subclasses of LoadFunc in org.apache.pig.backend.hadoop.accumulo

class	AbstractAccumuloStorage A LoadStoreFunc for retrieving data from and storing data to Accumulo A Key/Val pair will be returned as tuples: (key, colfam, colqual, colvis, timestamp, value).
class	AccumuloStorage Basic PigStorage implementation that uses Accumulo as the backing store.

Uses of LoadFunc in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

Subclasses of LoadFunc in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

class

MergeJoinIndexer Merge Join indexer is used to generate on the fly index for doing Merge Join efficiently.

Constructors in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with parameters of type LoadFunc

PigRecordReader(org.apache.hadoop.mapreduce.InputFormat<?,?> inputformat, PigSplit pigSplit, LoadFunc loadFunc, org.apache.hadoop.mapreduce.TaskAttemptContext context, long limit)

Uses of LoadFunc in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

Methods in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators that return LoadFunc

LoadFunc

POLoad.getLoadFunc()

Constructors in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators with parameters of type LoadFunc

POLoad(OperatorKey k, LoadFunc lf)

Uses of LoadFunc in org.apache.pig.backend.hadoop.hbase

Subclasses of LoadFunc in org.apache.pig.backend.hadoop.hbase

class

HBaseStorage A HBase implementation of LoadFunc and StoreFunc.

Uses of LoadFunc in org.apache.pig.builtin

Subclasses of LoadFunc in org.apache.pig.builtin

class	AvroStorage Pig UDF for reading and writing Avro data.
class	BinStorage Load and store data in a binary format.
class	JsonLoader A loader for data stored using JsonStorage.
class	ParquetLoader Wrapper class which will delegate calls to parquet.pig.ParquetLoader
class	PigStorage A load function that parses a line of input into fields using a character delimiter.
class	TextLoader This load function simply creates a tuple for each line of text that has a single chararray field that contains the line of text.
class	TrevniStorage Pig Store/Load Function for Trevni.

Uses of LoadFunc in org.apache.pig.builtin.mock

Subclasses of LoadFunc in org.apache.pig.builtin.mock

class

Storage A convenient mock Storage for unit tests

Uses of LoadFunc in org.apache.pig.impl.builtin

Subclasses of LoadFunc in org.apache.pig.impl.builtin

class	DefaultIndexableLoader Used by MergeJoin .
class	PoissonSampleLoader See "Skewed Join sampler" in http://wiki.apache.org/pig/PigSampler
class	RandomSampleLoader A loader that samples the data.
class	SampleLoader Abstract class that specifies the interface for sample loaders

Fields in org.apache.pig.impl.builtin declared as LoadFunc

protected LoadFunc

SampleLoader.loader

Uses of LoadFunc in org.apache.pig.impl.io

Subclasses of LoadFunc in org.apache.pig.impl.io

class	InterStorage LOAD FUNCTION FOR PIG INTERNAL USE ONLY! This load function is used for storing intermediate data between MR jobs of a pig query.
class	ReadToEndLoader This is wrapper Loader which wraps a real LoadFunc underneath and allows to read a file completely starting a given split (indicated by a split index which is used to look in the List returned by the underlying InputFormat's getSplits() method).
class	SequenceFileInterStorage Store tuples (BinSedesTuples, specifically) using sequence files to leverage sequence file's compression features.
class	TFileStorage LOAD FUNCTION FOR PIG INTERNAL USE ONLY! This load function is used for storing intermediate data between MR jobs of a pig query.

Methods in org.apache.pig.impl.io with parameters of type LoadFunc

DataBag

PigFile.load(LoadFunc lfunc, PigContext pigContext)

Constructors in org.apache.pig.impl.io with parameters of type LoadFunc

ReadToEndLoader(LoadFunc wrappedLoadFunc, org.apache.hadoop.conf.Configuration conf, String inputLocation, int splitIndex)

ReadToEndLoader(LoadFunc wrappedLoadFunc, org.apache.hadoop.conf.Configuration conf, String inputLocation, int[] toReadSplitIdxs)
This constructor takes an array of split indexes (toReadSplitIdxs) of the splits to be read.

ReadToEndLoader(LoadFunc wrappedLoadFunc, org.apache.hadoop.conf.Configuration conf, String inputLocation, int splitIndex, PigContext pigContext)

ReadToEndLoader(LoadFunc wrappedLoadFunc, org.apache.hadoop.conf.Configuration conf, String inputLocation, int splitIndex, String signature)

Uses of LoadFunc in org.apache.pig.impl.util

Methods in org.apache.pig.impl.util with parameters of type LoadFunc

static ResourceSchema

Utils.getSchema(LoadFunc wrappedLoadFunc, String location, boolean checkExistence, org.apache.hadoop.mapreduce.Job job)

Uses of LoadFunc in org.apache.pig.newplan.logical.relational

Methods in org.apache.pig.newplan.logical.relational that return LoadFunc

LoadFunc

LOLoad.getLoadFunc()

Constructors in org.apache.pig.newplan.logical.relational with parameters of type LoadFunc

LOLoad(FileSpec loader, LogicalSchema schema, LogicalPlan plan, org.apache.hadoop.conf.Configuration conf, LoadFunc loadFunc, String signature)
Used from the LogicalPlanBuilder

Uses of LoadFunc in org.apache.pig.piggybank.storage

Subclasses of LoadFunc in org.apache.pig.piggybank.storage

class	AllLoader The AllLoader provides the ability to point pig at a folder that contains files in multiple formats e.g.
class	CSVExcelStorage CSV loading and storing with support for multi-line fields, and escaping of delimiters and double quotes within fields; uses CSV conventions of Excel 2007.
class	CSVLoader A load function based on PigStorage that implements part of the CSV "standard" This loader properly supports double-quoted fields that contain commas and other double-quotes escaped with backslashes.
class	FixedWidthLoader A fixed-width file loader.
class	HadoopJobHistoryLoader
class	HiveColumnarLoader Loader for Hive RC Columnar files. Supports the following types: * Hive Type Pig Type from DataType string CHARARRAY int INTEGER bigint or long LONG float float double DOUBLE boolean BOOLEAN byte BYTE array TUPLE map MAP Partitions The input paths are scanned by the loader for [partition name]=[value] patterns in the subdirectories. If detected these partitions are appended to the table schema. For example if you have the directory structure:
class	HiveColumnarStorage
class	IndexedStorage IndexedStorage is a form of PigStorage that supports a per record seek.
class	MyRegExLoader
class	PigStorageSchema Deprecated. Use PigStorage with a -schema option instead
class	RegExLoader RegExLoader is an abstract class used to parse logs based on a regular expression.
class	SequenceFileLoader A Loader for Hadoop-Standard SequenceFiles.
class	XMLLoader Parses an XML input file given a specified identifier of tags to be loaded.

Methods in org.apache.pig.piggybank.storage that return LoadFunc

LoadFunc

AllLoader.AllReader.prepareLoadFuncForReading(PigSplit split)

Uses of LoadFunc in org.apache.pig.piggybank.storage.apachelog

Subclasses of LoadFunc in org.apache.pig.piggybank.storage.apachelog

class

CombinedLogLoader CombinedLogLoader is used to load logs based on Apache's combined log format, based on a format like LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined The log filename ends up being access_log from a line like CustomLog logs/combined_log combined Example: raw = LOAD 'combined_log' USING org.apache.pig.piggybank.storage.apachelog.CombinedLogLoader AS (remoteAddr, remoteLogname, user, time, method, uri, proto, status, bytes, referer, userAgent);

class

CommonLogLoader CommonLogLoader is used to load logs based on Apache's common log format, based on a format like LogFormat "%h %l %u %t \"%r\" %>s %b" common The log filename ends up being access_log from a line like CustomLog logs/access_log common Example: raw = LOAD 'access_log' USING org.apache.pig.piggybank.storage.apachelog.CommongLogLoader AS (remoteAddr, remoteLogname, user, time, method, uri, proto, bytes);

Uses of LoadFunc in org.apache.pig.piggybank.storage.partition

Method parameters in org.apache.pig.piggybank.storage.partition with type arguments of type LoadFunc

List<org.apache.hadoop.fs.FileStatus>	PathPartitionHelper.listStatus(org.apache.hadoop.mapreduce.JobContext ctx, Class<? extends LoadFunc> loaderClass, String signature) This method is called by the FileInputFormat to find the input paths for which splits should be calculated. If applyDateRanges == true: Then the HiveRCDateSplitter is used to apply filtering on the input files. Else the default FileInputFormat listStatus method is used.
void	PathPartitionHelper.setPartitionFilterExpression(String partitionFilterExpression, Class<? extends LoadFunc> loaderClass, String signature) Sets the PARITITION_FILTER_EXPRESSION property in the UDFContext identified by the loaderClass.
void	PathPartitionHelper.setPartitionKeys(String location, org.apache.hadoop.conf.Configuration conf, Class<? extends LoadFunc> loaderClass, String signature) Reads the partition keys from the location i.e the base directory