Package org.apache.hadoop.hbase.mapred

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

See: Description

Interface Summary

Interface	Description
TableMap<K extends org.apache.hadoop.io.WritableComparable<? super K>,V>	Scan an HBase table to sort by a specified sort column.
TableReduce<K extends org.apache.hadoop.io.WritableComparable,V>	Write a table, sorting by the input key

Class Summary

Class	Description
Driver	Driver for hbase mapreduce jobs.
GroupingTableMap	Extract grouping columns from input record
HRegionPartitioner<K2,V2>	This is used to partition the output keys into groups of keys.
IdentityTableMap	Pass the given key and record as-is to reduce
IdentityTableReduce	Write to table each key, record pair
MultiTableSnapshotInputFormat	MultiTableSnapshotInputFormat generalizes TableSnapshotInputFormat allowing a MapReduce job to run over one or more table snapshots, with one or more scans configured for each.
RowCounter	A job with a map to count rows.
RowCounter.RowCounterMapper	Mapper that runs the count.
TableInputFormat	Convert HBase tabular data into a format that is consumable by Map/Reduce.
TableInputFormatBase	A Base for TableInputFormats.
TableMapReduceUtil	Utility for TableMap and TableReduce
TableOutputFormat	Convert Map/Reduce output and write it to an HBase table
TableOutputFormat.TableRecordWriter	Convert Reduce output (key, value) to (HStoreKey, KeyedDataArrayWritable) and write to an HBase table.
TableRecordReader	Iterate over an HBase table data, return (Text, RowResult) pairs
TableRecordReaderImpl	Iterate over an HBase table data, return (Text, RowResult) pairs
TableSnapshotInputFormat	TableSnapshotInputFormat allows a MapReduce job to run over a table snapshot.
TableSnapshotInputFormat.TableSnapshotRecordReader
TableSnapshotInputFormat.TableSnapshotRegionSplit
TableSplit	A table split corresponds to a key range [low, high)

Enum Summary

Enum	Description
RowCounter.RowCounterMapper.Counters

Package org.apache.hadoop.hbase.mapred Description

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.