org.apache.hadoop.hbase.mapreduce

Class Import

java.lang.Object

org.apache.hadoop.hbase.mapreduce.Import

@InterfaceAudience.Public
@InterfaceStability.Stable
public class Import
extends Object

Import data written by Export.

Constructor Summary

Constructors

Constructor and Description
Import()

Method Summary

Methods

Modifier and Type	Method and Description
static void	addFilterAndArguments(org.apache.hadoop.conf.Configuration conf, Class<? extends Filter> clazz, List<String> args) Add a Filter to be instantiated on import
static void	configureCfRenaming(org.apache.hadoop.conf.Configuration conf, Map<String,String> renameMap) Sets a configuration property with key CF_RENAME_PROP in conf that tells the mapper how to rename column families.
static org.apache.hadoop.mapreduce.Job	createSubmittableJob(org.apache.hadoop.conf.Configuration conf, String[] args) Sets up the actual job.
static void	main(String[] args) Main entry point.

Methods inherited from class java.lang.Object

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

Constructor Detail

Import

public Import()

Method Detail

configureCfRenaming

public static void configureCfRenaming(org.apache.hadoop.conf.Configuration conf,
                       Map<String,String> renameMap)

Sets a configuration property with key CF_RENAME_PROP in conf that tells the mapper how to rename column families.

Alternately, instead of calling this function, you could set the configuration key CF_RENAME_PROP yourself. The value should look like

srcCf1:destCf1,srcCf2:destCf2,....

. This would have the same effect on the mapper behavior.

Parameters:

conf - the Configuration in which the CF_RENAME_PROP key will be set

renameMap - a mapping from source CF names to destination CF names

addFilterAndArguments

public static void addFilterAndArguments(org.apache.hadoop.conf.Configuration conf,
                         Class<? extends Filter> clazz,
                         List<String> args)

Add a Filter to be instantiated on import

Parameters:

conf - Configuration to update (will be passed to the job)

clazz - Filter subclass to instantiate on the server.

args - List of arguments to pass to the filter on instantiation

createSubmittableJob

public static org.apache.hadoop.mapreduce.Job createSubmittableJob(org.apache.hadoop.conf.Configuration conf,
                                                   String[] args)
                                                            throws IOException

Sets up the actual job.

Parameters:

conf - The current configuration.

args - The command line parameters.

Returns:

The newly created job.

Throws:

IOException - When setting up the job fails.

main

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

Main entry point.

Parameters:

args - The command line parameters.

Throws:

Exception - When running the job fails.