org.apache.hadoop.hbase.mapred
Class BuildTableIndex

java.lang.Object
  org.apache.hadoop.hbase.mapred.BuildTableIndex

Deprecated.

@Deprecated
public class BuildTableIndex
extends Object

Example table column indexing class. Runs a mapreduce job to index specified table columns.

• Each row is modeled as a Lucene document: row key is indexed in its untokenized form, column name-value pairs are Lucene field name-value pairs.
• A file passed on command line is used to populate an IndexConfiguration which is used to set various Lucene parameters, specify whether to optimize an index and which columns to index and/or store, in tokenized or untokenized form, etc. For an example, see the createIndexConfContent method in TestTableIndex
• The number of reduce tasks decides the number of indexes (partitions). The index(es) is stored in the output path of job configuration.
• The index build process is done in the reduce phase. Users can use the map phase to join rows from different tables or to pre-parse/analyze column content, etc.

Constructor Summary

BuildTableIndex()
Deprecated. default constructor

Method Summary

org.apache.hadoop.mapred.JobConf	createJob(org.apache.hadoop.conf.Configuration conf, int numMapTasks, int numReduceTasks, String indexDir, String tableName, String columnNames) Deprecated.
static void	main(String[] args) Deprecated.
void	run(String[] args) Deprecated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BuildTableIndex

public BuildTableIndex()

Deprecated.

default constructor

Method Detail

run

public void run(String[] args)
         throws IOException

Deprecated.

Parameters:

args -

Throws:

IOException

createJob

public org.apache.hadoop.mapred.JobConf createJob(org.apache.hadoop.conf.Configuration conf,
                                                  int numMapTasks,
                                                  int numReduceTasks,
                                                  String indexDir,
                                                  String tableName,
                                                  String columnNames)

Deprecated.

Parameters:

conf -

numMapTasks -

numReduceTasks -

indexDir -

tableName -

columnNames -

Returns:

JobConf

main

public static void main(String[] args)
                 throws IOException

Deprecated.

Parameters:

args -

Throws:

IOException