程序包 org.apache.hadoop.mapreduce.lib.input

接口概要

接口	说明
SequenceFileInputFilter.Filter	filter interface

类概要

类	说明
CombineFileInputFormat<K,V>	An abstract InputFormat that returns CombineFileSplit's in InputFormat.getSplits(JobContext) method.
CombineFileRecordReader<K,V>	A generic RecordReader that can hand out different recordReaders for each chunk in a CombineFileSplit.
CombineFileSplit	A sub-collection of input files.
DelegatingInputFormat<K,V>	An InputFormat that delegates behavior of paths to multiple other InputFormats.
DelegatingMapper<K1,V1,K2,V2>	An Mapper that delegates behavior of paths to multiple other mappers.
DelegatingRecordReader<K,V>	This is a delegating RecordReader, which delegates the functionality to the underlying record reader in TaggedInputSplit
FileInputFormat<K,V>	A base class for file-based InputFormats.
FileSplit	A section of an input file.
KeyValueLineRecordReader	This class treats a line in the input as a key/value pair separated by a separator character.
KeyValueTextInputFormat	An InputFormat for plain text files.
LineRecordReader	Treats keys as offset in file and value as line.
MultipleInputs	This class supports MapReduce jobs that have multiple input paths with a different InputFormat and Mapper for each path
NLineInputFormat	NLineInputFormat which splits N lines of input as one split.
SequenceFileAsBinaryInputFormat	InputFormat reading keys, values from SequenceFiles in binary (raw) format.
SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader	Read records from a SequenceFile as binary (raw) bytes.
SequenceFileAsTextInputFormat	This class is similar to SequenceFileInputFormat, except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method.
SequenceFileAsTextRecordReader	This class converts the input keys and values to their String forms by calling toString() method.
SequenceFileInputFilter<K,V>	A class that allows a map/red job to work on a sample of sequence files.
SequenceFileInputFilter.FilterBase	base class for Filters
SequenceFileInputFilter.MD5Filter	This class returns a set of records by examing the MD5 digest of its key against a filtering frequency f.
SequenceFileInputFilter.PercentFilter	This class returns a percentage of records The percentage is determined by a filtering frequency f using the criteria record# % f == 0.
SequenceFileInputFilter.RegexFilter	Records filter by matching key to regex
SequenceFileInputFormat<K,V>	An InputFormat for SequenceFiles.
SequenceFileRecordReader<K,V>	An RecordReader for SequenceFiles.
TextInputFormat	An InputFormat for plain text files.

枚举概要

枚举	说明
FileInputFormat.Counter

异常错误概要

异常错误	说明
InvalidInputException	This class wraps a list of problems with the input, so that the user can get a list of problems together instead of finding and fixing them one by one.