org.apache.hadoop.hbase.util

Class ModifyRegionUtils

java.lang.Object

org.apache.hadoop.hbase.util.ModifyRegionUtils

@InterfaceAudience.Private
public abstract class ModifyRegionUtils
extends Object

Utility methods for interacting with the regions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ModifyRegionUtils.RegionEditTask
static interface	ModifyRegionUtils.RegionFillTask

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ModifyRegionUtils()

Method Summary

Modifier and Type	Method and Description
static RegionInfo	createRegion(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, TableDescriptor tableDescriptor, RegionInfo newRegion, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static RegionInfo[]	createRegionInfos(TableDescriptor tableDescriptor, byte[][] splitKeys)
static List<RegionInfo>	createRegions(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, TableDescriptor tableDescriptor, RegionInfo[] newRegions, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static List<RegionInfo>	createRegions(ThreadPoolExecutor exec, org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path rootDir, TableDescriptor tableDescriptor, RegionInfo[] newRegions, ModifyRegionUtils.RegionFillTask task) Create new set of regions on the specified file-system.
static void	editRegions(ThreadPoolExecutor exec, Collection<RegionInfo> regions, ModifyRegionUtils.RegionEditTask task) Execute the task on the specified set of regions.
(package private) static ThreadPoolExecutor	getRegionOpenAndInitThreadPool(org.apache.hadoop.conf.Configuration conf, String threadNamePrefix, int regionNumber)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.slf4j.Logger LOG

Constructor Detail

ModifyRegionUtils

private ModifyRegionUtils()

Method Detail

createRegionInfos

public static RegionInfo[] createRegionInfos(TableDescriptor tableDescriptor,
                                             byte[][] splitKeys)

createRegions

public static List<RegionInfo> createRegions(org.apache.hadoop.conf.Configuration conf,
                                             org.apache.hadoop.fs.Path rootDir,
                                             TableDescriptor tableDescriptor,
                                             RegionInfo[] newRegions,
                                             ModifyRegionUtils.RegionFillTask task)
                                      throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

tableDescriptor - description of the table

newRegions - RegionInfo that describes the regions to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

createRegions

public static List<RegionInfo> createRegions(ThreadPoolExecutor exec,
                                             org.apache.hadoop.conf.Configuration conf,
                                             org.apache.hadoop.fs.Path rootDir,
                                             TableDescriptor tableDescriptor,
                                             RegionInfo[] newRegions,
                                             ModifyRegionUtils.RegionFillTask task)
                                      throws IOException

Create new set of regions on the specified file-system. NOTE: that you should add the regions to hbase:meta after this operation.

Parameters:

exec - Thread Pool Executor

conf - Configuration

rootDir - Root directory for HBase instance

tableDescriptor - description of the table

newRegions - RegionInfo that describes the regions to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

createRegion

public static RegionInfo createRegion(org.apache.hadoop.conf.Configuration conf,
                                      org.apache.hadoop.fs.Path rootDir,
                                      TableDescriptor tableDescriptor,
                                      RegionInfo newRegion,
                                      ModifyRegionUtils.RegionFillTask task)
                               throws IOException

Create new set of regions on the specified file-system.

Parameters:

conf - Configuration

rootDir - Root directory for HBase instance

tableDescriptor - description of the table

newRegion - RegionInfo that describes the region to create

task - ModifyRegionUtils.RegionFillTask custom code to populate region after creation

Throws:

IOException

editRegions

public static void editRegions(ThreadPoolExecutor exec,
                               Collection<RegionInfo> regions,
                               ModifyRegionUtils.RegionEditTask task)
                        throws IOException

Execute the task on the specified set of regions.

Parameters:

exec - Thread Pool Executor

regions - RegionInfo that describes the regions to edit

task - ModifyRegionUtils.RegionFillTask custom code to edit the region

Throws:

IOException

getRegionOpenAndInitThreadPool

static ThreadPoolExecutor getRegionOpenAndInitThreadPool(org.apache.hadoop.conf.Configuration conf,
                                                         String threadNamePrefix,
                                                         int regionNumber)