程序包 org.apache.hadoop.hbase.mapreduce

Provides HBase MapReduce Input/OutputFormats, a table indexing MapReduce job, and utility methods.

请参阅: 说明

接口概要

接口	说明
VisibilityExpressionResolver	Interface to convert visibility expressions into Tags for storing along with Cells in HFiles.

类概要

类	说明
CellCounter	A job with a a map and reduce phase to count cells in a table.
CellCreator	Facade to create Cells for HFileOutputFormat.
CellSerialization	Use to specify the type of serialization for the mappers and reducers
CellSerialization.CellDeserializer
CellSerialization.CellSerializer
CellSortReducer	Emits sorted Cells.
CopyTable	Tool used to copy a table to another one which can be on a different setup.
DefaultVisibilityExpressionResolver	This implementation creates tags by expanding expression using label ordinal.
Driver	Driver for hbase mapreduce jobs.
Export	Export an HBase table.
ExportUtils	Some helper methods are used by Export and org.apache.hadoop.hbase.coprocessor.Export (in hbase-endpooint).
GroupingTableMapper	Extract grouping columns from input record.
HashTable
HashTable.HashMapper
HashTable.TableHash
HFileInputFormat	Simple MR input format for HFiles.
HFileOutputFormat2	Writes HFiles.
HRegionPartitioner<KEY,VALUE>	This is used to partition the output keys into groups of keys.
IdentityTableMapper	Pass the given key and record as-is to the reduce phase.
IdentityTableReducer	Convenience class that simply writes all values (which must be Put or Delete instances) passed to it out to the configured HBase table.
Import	Import data written by Export.
Import.CellImporter	A mapper that just writes out KeyValues.
Import.CellReducer
Import.CellSortImporter
Import.CellWritableComparable
Import.CellWritableComparable.CellWritableComparator
Import.CellWritableComparablePartitioner
Import.Importer	Write table content out to files in hdfs.
Import.KeyValueImporter	已过时 Use Import.CellImporter.
Import.KeyValueReducer	已过时 Use Import.CellReducer.
Import.KeyValueSortImporter	已过时 Use Import.CellSortImporter.
Import.KeyValueWritableComparable
Import.KeyValueWritableComparable.KeyValueWritableComparator
Import.KeyValueWritableComparablePartitioner	已过时 Use Import.CellWritableComparablePartitioner.
ImportTsv	Tool to import data from a TSV file.
ImportTsv.TsvParser
JarFinder	Finds the Jar for a class.
KeyValueSerialization	已过时 Use CellSerialization.
KeyValueSerialization.KeyValueDeserializer
KeyValueSerialization.KeyValueSerializer
KeyValueSortReducer	已过时 Use CellSortReducer.
MultiTableHFileOutputFormat	Create 3 level tree directory, first level is using table name as parent directory and then use family name as child directory, and all related HFiles for one family are under child directory -tableName1 -columnFamilyName1 -columnFamilyName2 -HFiles -tableName2 -columnFamilyName1 -HFiles -columnFamilyName2
MultiTableInputFormat	Convert HBase tabular data from multiple scanners into a format that is consumable by Map/Reduce.
MultiTableInputFormatBase	A base for MultiTableInputFormats.
MultiTableOutputFormat	Hadoop output format that writes to one or more HBase tables.
MultiTableOutputFormat.MultiTableRecordWriter	Record writer for outputting to multiple HTables.
MultiTableSnapshotInputFormat	MultiTableSnapshotInputFormat generalizes TableSnapshotInputFormat allowing a MapReduce job to run over one or more table snapshots, with one or more scans configured for each.
MultiTableSnapshotInputFormatImpl	Shared implementation of mapreduce code over multiple table snapshots.
MultithreadedTableMapper<K2,V2>	Multithreaded implementation for @link org.apache.hbase.mapreduce.TableMapper It can be used instead when the Map operation is not CPU bound in order to improve throughput.
MutationSerialization
PutCombiner<K>	Combine Puts.
PutSortReducer	Emits sorted Puts.
RegionSizeCalculator	Computes size of each region for given table and given column families.
ResultSerialization
RowCounter	A job with a just a map phase to count rows.
SimpleTotalOrderPartitioner<VALUE>	A partitioner that takes start and end keys and uses bigdecimal to figure which reduce a key belongs to.
SyncTable
SyncTable.SyncMapper
TableInputFormat	Convert HBase tabular data into a format that is consumable by Map/Reduce.
TableInputFormatBase	A base for TableInputFormats.
TableMapper<KEYOUT,VALUEOUT>	Extends the base Mapper class to add the required input key and value classes.
TableMapReduceUtil	Utility for TableMapper and TableReducer
TableOutputCommitter	Small committer class that does not do anything.
TableOutputFormat<KEY>	Convert Map/Reduce output and write it to an HBase table.
TableRecordReader	Iterate over an HBase table data, return (ImmutableBytesWritable, Result) pairs.
TableRecordReaderImpl	Iterate over an HBase table data, return (ImmutableBytesWritable, Result) pairs.
TableReducer<KEYIN,VALUEIN,KEYOUT>	Extends the basic Reducer class to add the required key and value input/output classes.
TableSnapshotInputFormat	TableSnapshotInputFormat allows a MapReduce job to run over a table snapshot.
TableSnapshotInputFormat.TableSnapshotRegionSplit
TableSnapshotInputFormatImpl	Hadoop MR API-agnostic implementation for mapreduce over table snapshots.
TableSnapshotInputFormatImpl.InputSplit	Implementation class for InputSplit logic common between mapred and mapreduce.
TableSnapshotInputFormatImpl.RecordReader	Implementation class for RecordReader logic common between mapred and mapreduce.
TableSplit	A table split corresponds to a key range (low, high) and an optional scanner.
TextSortReducer	Emits Sorted KeyValues.
TsvImporterMapper	Write table content out to files in hdfs.
TsvImporterTextMapper	Write table content out to map output files.
WALInputFormat	Simple InputFormat for WAL files.
WALPlayer	A tool to replay WAL files as a M/R job.
WALPlayer.WALMapper	A mapper that writes out Mutation to be directly applied to a running HBase instance.

枚举概要

枚举	说明
SyncTable.SyncMapper.Counter

异常错误概要

异常错误	说明
ImportTsv.TsvParser.BadTsvLineException

程序包org.apache.hadoop.hbase.mapreduce的说明

Provides HBase MapReduce Input/OutputFormats, a table indexing MapReduce job, and utility methods.

See HBase and MapReduce in the HBase Reference Guide for mapreduce over hbase documentation.