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java.lang.Objectorg.apache.hadoop.hbase.mapreduce.IndexBuilder
public class IndexBuilder
Example map/reduce job to construct index tables that can be used to quickly find a row based on the value of a column. It demonstrates:
Modify ${HADOOP_HOME}/conf/hadoop-env.sh to include the hbase jar, the zookeeper jar (can be found in lib/ directory under HBase root, the examples output directory, and the hbase conf directory in HADOOP_CLASSPATH, and then run bin/hadoop org.apache.hadoop.hbase.mapreduce.IndexBuilder TABLE_NAME COLUMN_FAMILY ATTR [ATTR ...]
To run with the sample data provided in index-builder-setup.rb, use the arguments people attributes name email phone.
This code was written against HBase 0.21 trunk.
| Nested Class Summary | |
|---|---|
static class |
IndexBuilder.Map
Internal Mapper to be run by Hadoop. |
| Field Summary | |
|---|---|
static byte[] |
INDEX_COLUMN
the column family containing the indexed row key |
static byte[] |
INDEX_QUALIFIER
the qualifier containing the indexed row key |
| Constructor Summary | |
|---|---|
IndexBuilder()
|
|
| Method Summary | |
|---|---|
static org.apache.hadoop.mapreduce.Job |
configureJob(org.apache.hadoop.conf.Configuration conf,
String[] args)
Job configuration. |
static void |
main(String[] args)
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
public static final byte[] INDEX_COLUMN
public static final byte[] INDEX_QUALIFIER
| Constructor Detail |
|---|
public IndexBuilder()
| Method Detail |
|---|
public static org.apache.hadoop.mapreduce.Job configureJob(org.apache.hadoop.conf.Configuration conf,
String[] args)
throws IOException
IOException
public static void main(String[] args)
throws Exception
Exception
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