org.apache.hadoop.hbase.mapred

类 IdentityTableMap

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

org.apache.hadoop.hbase.mapred.IdentityTableMap

所有已实现的接口:

Closeable, AutoCloseable, TableMap<ImmutableBytesWritable,Result>, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<ImmutableBytesWritable,Result,ImmutableBytesWritable,Result>

@InterfaceAudience.Public
@InterfaceStability.Stable
public class IdentityTableMap
extends org.apache.hadoop.mapred.MapReduceBase
implements TableMap<ImmutableBytesWritable,Result>

Pass the given key and record as-is to reduce

构造器概要

构造器

构造器和说明
IdentityTableMap() constructor

方法概要

方法

限定符和类型	方法和说明
static void	initJob(String table, String columns, Class<? extends TableMap> mapper, org.apache.hadoop.mapred.JobConf job) Use this before submitting a TableMap job.
void	map(ImmutableBytesWritable key, Result value, org.apache.hadoop.mapred.OutputCollector<ImmutableBytesWritable,Result> output, org.apache.hadoop.mapred.Reporter reporter) Pass the key, value to reduce

从类继承的方法 org.apache.hadoop.mapred.MapReduceBase

close, configure

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.mapred.JobConfigurable

configure

从接口继承的方法 java.io.Closeable

close

构造器详细资料

IdentityTableMap

public IdentityTableMap()

constructor

方法详细资料

initJob

public static void initJob(String table,
           String columns,
           Class<? extends TableMap> mapper,
           org.apache.hadoop.mapred.JobConf job)

Use this before submitting a TableMap job. It will appropriately set up the JobConf.

参数:

table - table name

columns - columns to scan

mapper - mapper class

job - job configuration

map

public void map(ImmutableBytesWritable key,
       Result value,
       org.apache.hadoop.mapred.OutputCollector<ImmutableBytesWritable,Result> output,
       org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Pass the key, value to reduce

指定者:

map 在接口中 org.apache.hadoop.mapred.Mapper<ImmutableBytesWritable,Result,ImmutableBytesWritable,Result>

参数:

key -

value -

output -

reporter -

抛出:

IOException