Uses of Package
org.apache.pig

Packages that use org.apache.pig

Package	Description
org.apache.pig	Public interfaces and classes for Pig.
org.apache.pig.backend
org.apache.pig.backend.datastorage
org.apache.pig.backend.executionengine
org.apache.pig.backend.hadoop.accumulo
org.apache.pig.backend.hadoop.executionengine
org.apache.pig.backend.hadoop.executionengine.fetch
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
org.apache.pig.backend.hadoop.executionengine.physicalLayer	Implementation of physical operators that use hadoop as the execution engine and data storage.
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
org.apache.pig.backend.hadoop.executionengine.physicalLayer.util
org.apache.pig.backend.hadoop.executionengine.spark
org.apache.pig.backend.hadoop.executionengine.spark.plan
org.apache.pig.backend.hadoop.executionengine.tez
org.apache.pig.backend.hadoop.executionengine.tez.plan
org.apache.pig.backend.hadoop.executionengine.tez.plan.operator
org.apache.pig.backend.hadoop.executionengine.tez.plan.udf
org.apache.pig.backend.hadoop.hbase
org.apache.pig.builtin	This package contains builtin Pig UDFs.
org.apache.pig.builtin.mock
org.apache.pig.data	This package contains implementations of Pig specific data types as well as support functions for reading, writing, and using all Pig data types.
org.apache.pig.impl
org.apache.pig.impl.builtin
org.apache.pig.impl.io
org.apache.pig.impl.logicalLayer	The logical operators that represent a pig script and tools for manipulating those operators.
org.apache.pig.impl.logicalLayer.schema
org.apache.pig.impl.logicalLayer.validators
org.apache.pig.impl.plan
org.apache.pig.impl.plan.optimizer
org.apache.pig.impl.streaming
org.apache.pig.impl.util
org.apache.pig.impl.util.avro
org.apache.pig.impl.util.hive
org.apache.pig.newplan
org.apache.pig.newplan.logical.expression
org.apache.pig.newplan.logical.relational
org.apache.pig.newplan.logical.rules
org.apache.pig.newplan.logical.visitor
org.apache.pig.parser
org.apache.pig.pen
org.apache.pig.scripting
org.apache.pig.scripting.groovy
org.apache.pig.scripting.jruby
org.apache.pig.scripting.js
org.apache.pig.scripting.jython
org.apache.pig.tools
org.apache.pig.tools.grunt
org.apache.pig.tools.pigstats.spark
org.apache.pig.validator

Classes in org.apache.pig used by org.apache.pig

Class and Description
Accumulator An interface that allows UDFs that take a bag to accumulate tuples in chunks rather than take the whole set at once.
AccumulatorEvalFunc This class is used to provide a free implementation of the EvalFunc exec function given implementation of the Accumulator interface.
Algebraic An interface to declare that an EvalFunc's calculation can be decomposed into intitial, intermediate, and final steps.
ErrorHandler The interface that handles errors thrown by the StoreFuncInterface.putNext(Tuple)
EvalFunc The class is used to implement functions to be applied to fields in a dataset.
EvalFunc.SchemaType EvalFunc's schema type.
ExceptionalFunction An interface that captures a unit of work against an item where an exception might be thrown.
ExecType The type of query execution.
Expression A class to communicate Filter expressions to LoadFuncs.
Expression.OpType
FileSplitComparable This class represents a relative position in a file.
FuncSpec Class to represent a UDF specification.
JVMReuseManager This class is used to manage JVM Reuse in case of execution engines like Tez and Spark.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadFuncWrapper Convenience class to extend when decorating a LoadFunc.
LoadMetadata This interface defines how to retrieve metadata related to data to be loaded.
LoadPushDown.OperatorSet Set of possible operations that Pig can push down to a loader.
LoadPushDown.RequiredField Describes a field that is required to execute a scripts.
LoadPushDown.RequiredFieldList List of fields that Pig knows to be required to executed a script.
LoadPushDown.RequiredFieldResponse Indicates whether the loader will return the requested fields or all fields.
OrderedLoadFunc Implementing this interface indicates to Pig that a given loader can be used for MergeJoin.
PigCounters The following enum will contain the general counters that pig uses.
PigException All exceptions in Pig are encapsulated in the PigException class.
PigServer.Graph
PigToStream Deprecated. Use PigStreamingBase
PigWarning An enum to enumerate the warning types in Pig
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceSchema.Order
ResourceSchema.ResourceFieldSchema
ResourceStatistics An class that represents statistics about data to be loaded or stored.
ResourceStatistics.ResourceFieldStatistics Statistics for a given field in the data.
SortColInfo A class representing information about a sort column in SortInfo
SortColInfo.Order
SortInfo Class to communicate sort column information based on order by statment's sort columns and schema
StoreCaster An interface that provides methods for converting Pig internal types to byte[].
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.
StoreFuncWrapper Convenience class to extend when decorating a StoreFunc.
StoreMetadata This interface defines how to write metadata related to data to be stored.
StreamToPig Deprecated. Use PigStreamingBase
TerminatingAccumulator This is an interface which, if implemented, allows an Accumulator function to signal that it can terminate early.
TypedOutputEvalFunc Base class for Pig UDFs that are functions from Tuples to generic type OUT.

Classes in org.apache.pig used by org.apache.pig.backend

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.datastorage

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.executionengine

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.accumulo

Class and Description
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadStoreCaster This is just a union interface of LoadCaster and StoreCaster, made available for simplicity.
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceSchema.ResourceFieldSchema
StoreCaster An interface that provides methods for converting Pig internal types to byte[].
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.fetch

Class and Description
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

Class and Description
ExecType The type of query execution.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
PigException All exceptions in Pig are encapsulated in the PigException class.
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.physicalLayer

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators

Class and Description
ComparisonFunc Deprecated.
EvalFunc The class is used to implement functions to be applied to fields in a dataset.
FuncSpec Class to represent a UDF specification.
ResourceSchema.ResourceFieldSchema

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

Class and Description
FuncSpec Class to represent a UDF specification.
LoadFunc A LoadFunc loads data into Pig.
SortInfo Class to communicate sort column information based on order by statment's sort columns and schema
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.physicalLayer.util

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.spark

Class and Description
ExecType The type of query execution.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.spark.plan

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.tez

Class and Description
ExecType The type of query execution.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.tez.plan

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.tez.plan.operator

Class and Description
LoadFunc A LoadFunc loads data into Pig.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.executionengine.tez.plan.udf

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.backend.hadoop.hbase

Class and Description
CollectableLoadFunc This interface implemented by a LoadFunc implementations indicates to Pig that it has the capability to load data such that all instances of a key will occur in same split.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadPushDown This interface defines how to communicate to Pig what functionality can be pushed into the loader.
LoadPushDown.OperatorSet Set of possible operations that Pig can push down to a loader.
LoadPushDown.RequiredFieldList List of fields that Pig knows to be required to executed a script.
LoadPushDown.RequiredFieldResponse Indicates whether the loader will return the requested fields or all fields.
LoadStoreCaster This is just a union interface of LoadCaster and StoreCaster, made available for simplicity.
OrderedLoadFunc Implementing this interface indicates to Pig that a given loader can be used for MergeJoin.
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceSchema.ResourceFieldSchema
StoreCaster An interface that provides methods for converting Pig internal types to byte[].
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.
StoreResources This interface allow StoreFunc to specify resources needed in distributed cache.

Classes in org.apache.pig used by org.apache.pig.builtin

Class and Description
Accumulator An interface that allows UDFs that take a bag to accumulate tuples in chunks rather than take the whole set at once.
AccumulatorEvalFunc This class is used to provide a free implementation of the EvalFunc exec function given implementation of the Accumulator interface.
Algebraic An interface to declare that an EvalFunc's calculation can be decomposed into intitial, intermediate, and final steps.
EvalFunc The class is used to implement functions to be applied to fields in a dataset.
EvalFunc.SchemaType EvalFunc's schema type.
ExceptionalFunction An interface that captures a unit of work against an item where an exception might be thrown.
Expression A class to communicate Filter expressions to LoadFuncs.
Expression.OpType
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
FilterFunc
FuncSpec Class to represent a UDF specification.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadFuncMetadataWrapper Convenience class to extend when decorating a class that extends LoadFunc and implements LoadMetadata.
LoadFuncWrapper Convenience class to extend when decorating a LoadFunc.
LoadMetadata This interface defines how to retrieve metadata related to data to be loaded.
LoadPredicatePushdown This interface defines how a loader can support predicate pushdown.
LoadPushDown This interface defines how to communicate to Pig what functionality can be pushed into the loader.
LoadPushDown.OperatorSet Set of possible operations that Pig can push down to a loader.
LoadPushDown.RequiredFieldList List of fields that Pig knows to be required to executed a script.
LoadPushDown.RequiredFieldResponse Indicates whether the loader will return the requested fields or all fields.
LoadStoreCaster This is just a union interface of LoadCaster and StoreCaster, made available for simplicity.
OrderedLoadFunc Implementing this interface indicates to Pig that a given loader can be used for MergeJoin.
OverwritableStoreFunc A StoreFunc should implement this interface to enable overwriting its store/output location if it already exists.
PigStreamingBase The interface is used for the custom mapping of - a Tuple to a byte array.
PigToStream Deprecated. Use PigStreamingBase
PrimitiveEvalFunc Base class for simple Pig UDFs that are functions of primitive types IN to OUT.
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceSchema.ResourceFieldSchema
ResourceStatistics An class that represents statistics about data to be loaded or stored.
StaticDataCleanup
StoreCaster An interface that provides methods for converting Pig internal types to byte[].
StoreFunc StoreFuncs take records from Pig's processing and store them into a data store.
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.
StoreFuncMetadataWrapper Convenience class to extend when decorating a class that implements both StoreFunc and StoreMetadata.
StoreFuncWrapper Convenience class to extend when decorating a StoreFunc.
StoreMetadata This interface defines how to write metadata related to data to be stored.
StoreResources This interface allow StoreFunc to specify resources needed in distributed cache.
StreamToPig Deprecated. Use PigStreamingBase
TypedOutputEvalFunc Base class for Pig UDFs that are functions from Tuples to generic type OUT.

Classes in org.apache.pig used by org.apache.pig.builtin.mock

Class and Description
Expression A class to communicate Filter expressions to LoadFuncs.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadMetadata This interface defines how to retrieve metadata related to data to be loaded.
PigServer A class for Java programs to connect to Pig.
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceStatistics An class that represents statistics about data to be loaded or stored.
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.
StoreMetadata This interface defines how to write metadata related to data to be stored.

Classes in org.apache.pig used by org.apache.pig.data

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.
ResourceSchema.ResourceFieldSchema

Classes in org.apache.pig used by org.apache.pig.impl

Class and Description
ExecType The type of query execution.
FuncSpec Class to represent a UDF specification.
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.impl.builtin

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.
FuncSpec Class to represent a UDF specification.
IndexableLoadFunc This class is intended for use by LoadFunc implementations which have an internal index for sorted data and can use the index to support merge join in Pig.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.

Classes in org.apache.pig used by org.apache.pig.impl.io

Class and Description
ExecType The type of query execution.
Expression A class to communicate Filter expressions to LoadFuncs.
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
FuncSpec Class to represent a UDF specification.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
LoadMetadata This interface defines how to retrieve metadata related to data to be loaded.
OrderedLoadFunc Implementing this interface indicates to Pig that a given loader can be used for MergeJoin.
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceStatistics An class that represents statistics about data to be loaded or stored.
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.impl.logicalLayer

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.impl.logicalLayer.schema

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.
ResourceSchema A represenation of a schema used to communicate with load and store functions.

Classes in org.apache.pig used by org.apache.pig.impl.logicalLayer.validators

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.impl.plan

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.impl.plan.optimizer

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.impl.streaming

Class and Description
LoadCaster An interface that provides cast implementations for load functions.
PigException All exceptions in Pig are encapsulated in the PigException class.
PigStreamingBase The interface is used for the custom mapping of - a Tuple to a byte array.
PigToStream Deprecated. Use PigStreamingBase
StreamToPig Deprecated. Use PigStreamingBase

Classes in org.apache.pig used by org.apache.pig.impl.util

Class and Description
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
FuncSpec Class to represent a UDF specification.
LoadCaster An interface that provides cast implementations for load functions.
LoadFunc A LoadFunc loads data into Pig.
PigException All exceptions in Pig are encapsulated in the PigException class.
PigWarning An enum to enumerate the warning types in Pig
ResourceSchema A represenation of a schema used to communicate with load and store functions.
ResourceSchema.ResourceFieldSchema

Classes in org.apache.pig used by org.apache.pig.impl.util.avro

Class and Description
LoadPushDown.RequiredField Describes a field that is required to execute a scripts.
LoadPushDown.RequiredFieldList List of fields that Pig knows to be required to executed a script.
ResourceSchema A represenation of a schema used to communicate with load and store functions.

Classes in org.apache.pig used by org.apache.pig.impl.util.hive

Class and Description
ResourceSchema.ResourceFieldSchema

Classes in org.apache.pig used by org.apache.pig.newplan

Class and Description
Expression A class to communicate Filter expressions to LoadFuncs.
Expression.OpType

Classes in org.apache.pig used by org.apache.pig.newplan.logical.expression

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.
FuncSpec Class to represent a UDF specification.

Classes in org.apache.pig used by org.apache.pig.newplan.logical.relational

Class and Description
FuncSpec Class to represent a UDF specification.
LoadFunc A LoadFunc loads data into Pig.
SortInfo Class to communicate sort column information based on order by statment's sort columns and schema
StoreFuncInterface StoreFuncs take records from Pig's processing and store them into a data store.

Classes in org.apache.pig used by org.apache.pig.newplan.logical.rules

Class and Description
Expression A class to communicate Filter expressions to LoadFuncs.

Classes in org.apache.pig used by org.apache.pig.newplan.logical.visitor

Class and Description
EvalFunc.SchemaType EvalFunc's schema type.
FuncSpec Class to represent a UDF specification.

Classes in org.apache.pig used by org.apache.pig.parser

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.
PigServer A class for Java programs to connect to Pig.

Classes in org.apache.pig used by org.apache.pig.pen

Class and Description
PigException All exceptions in Pig are encapsulated in the PigException class.

Classes in org.apache.pig used by org.apache.pig.scripting

Class and Description
ExecType The type of query execution.

Classes in org.apache.pig used by org.apache.pig.scripting.groovy

Class and Description
Accumulator An interface that allows UDFs that take a bag to accumulate tuples in chunks rather than take the whole set at once.
AccumulatorEvalFunc This class is used to provide a free implementation of the EvalFunc exec function given implementation of the Accumulator interface.
Algebraic An interface to declare that an EvalFunc's calculation can be decomposed into intitial, intermediate, and final steps.
AlgebraicEvalFunc This class is used to provide a free implementation of the Accumulator interface and EvalFunc class in the case of an Algebraic function.
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.scripting.jruby

Class and Description
Accumulator An interface that allows UDFs that take a bag to accumulate tuples in chunks rather than take the whole set at once.
AccumulatorEvalFunc This class is used to provide a free implementation of the EvalFunc exec function given implementation of the Accumulator interface.
Algebraic An interface to declare that an EvalFunc's calculation can be decomposed into intitial, intermediate, and final steps.
AlgebraicEvalFunc This class is used to provide a free implementation of the Accumulator interface and EvalFunc class in the case of an Algebraic function.
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.scripting.js

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.scripting.jython

Class and Description
EvalFunc The class is used to implement functions to be applied to fields in a dataset.

Classes in org.apache.pig used by org.apache.pig.tools

Class and Description
ExecType The type of query execution.
PigServer A class for Java programs to connect to Pig.

Classes in org.apache.pig used by org.apache.pig.tools.grunt

Class and Description
PigServer A class for Java programs to connect to Pig.

Classes in org.apache.pig used by org.apache.pig.tools.pigstats.spark

Class and Description
StaticDataCleanup

Classes in org.apache.pig used by org.apache.pig.validator

Class and Description
PigServer A class for Java programs to connect to Pig.