org.apache.hadoop.hbase.master.handler

类 CreateTableHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.master.handler.CreateTableHandler

所有已实现的接口:

Comparable<Runnable>, Runnable

直接已知子类:

CloneSnapshotHandler

@InterfaceAudience.Private
public class CreateTableHandler
extends EventHandler

Handler to create a table.

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hbase.executor.EventHandler

EventHandler.EventHandlerListener

字段概要

字段

限定符和类型	字段和说明
protected org.apache.hadoop.conf.Configuration	conf
protected MasterFileSystem	fileSystemManager
protected HTableDescriptor	hTableDescriptor

从类继承的字段 org.apache.hadoop.hbase.executor.EventHandler

eventType, seqids, server, waitingTimeForEvents

构造器概要

构造器

构造器和说明
CreateTableHandler(Server server, MasterFileSystem fileSystemManager, HTableDescriptor hTableDescriptor, org.apache.hadoop.conf.Configuration conf, HRegionInfo[] newRegions, MasterServices masterServices)

方法概要

方法

限定符和类型	方法和说明
protected void	addRegionsToMeta(List<HRegionInfo> regionInfos, int regionReplication) Add the specified set of regions to the hbase:meta table.
protected List<HRegionInfo>	addReplicas(HTableDescriptor hTableDescriptor, List<HRegionInfo> regions) Create any replicas for the regions (the default replicas that was already created is passed to the method)
protected void	completed(Throwable exception) Called after that process() is completed.
protected List<HRegionInfo>	handleCreateHdfsRegions(org.apache.hadoop.fs.Path tableRootDir, TableName tableName) Create the on-disk structure for the table, and returns the regions info.
CreateTableHandler	prepare() Event handlers should do all the necessary checks in this method (rather than in the constructor, or in process()) so that the caller, which is mostly executed in the ipc context can fail fast.
void	process() This method is the main processing loop to be implemented by the various subclasses.
String	toString()

从类继承的方法 org.apache.hadoop.hbase.executor.EventHandler

compareTo, getEventType, getInformativeName, getListener, getPriority, getSeqid, handleException, run, setListener

从类继承的方法 java.lang.Object

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

字段详细资料

fileSystemManager

protected final MasterFileSystem fileSystemManager

hTableDescriptor

protected final HTableDescriptor hTableDescriptor

conf

protected final org.apache.hadoop.conf.Configuration conf

构造器详细资料

CreateTableHandler

public CreateTableHandler(Server server,
                  MasterFileSystem fileSystemManager,
                  HTableDescriptor hTableDescriptor,
                  org.apache.hadoop.conf.Configuration conf,
                  HRegionInfo[] newRegions,
                  MasterServices masterServices)

方法详细资料

prepare

public CreateTableHandler prepare()
                           throws NotAllMetaRegionsOnlineException,
                                  TableExistsException,
                                  IOException

从类复制的说明: EventHandler

Event handlers should do all the necessary checks in this method (rather than in the constructor, or in process()) so that the caller, which is mostly executed in the ipc context can fail fast. Process is executed async from the client ipc, so this method gives a quick chance to do some basic checks. Should be called after constructing the EventHandler, and before process().

覆盖:

prepare 在类中 EventHandler

返回:

the instance of this class

抛出:

NotAllMetaRegionsOnlineException

TableExistsException

IOException

toString

public String toString()

覆盖:

toString 在类中 EventHandler

process

public void process()

从类复制的说明: EventHandler

This method is the main processing loop to be implemented by the various subclasses.

指定者:

process 在类中 EventHandler

completed

protected void completed(Throwable exception)

Called after that process() is completed.

参数:

exception - null if process() is successful or not null if something has failed.

addReplicas

protected List<HRegionInfo> addReplicas(HTableDescriptor hTableDescriptor,
                            List<HRegionInfo> regions)

Create any replicas for the regions (the default replicas that was already created is passed to the method)

参数:

hTableDescriptor -

regions - default replicas

返回:

the combined list of default and non-default replicas

handleCreateHdfsRegions

protected List<HRegionInfo> handleCreateHdfsRegions(org.apache.hadoop.fs.Path tableRootDir,
                                        TableName tableName)
                                             throws IOException

Create the on-disk structure for the table, and returns the regions info.

参数:

tableRootDir - directory where the table is being created

tableName - name of the table under construction

返回:

the list of regions created

抛出:

IOException

addRegionsToMeta

protected void addRegionsToMeta(List<HRegionInfo> regionInfos,
                    int regionReplication)
                         throws IOException

Add the specified set of regions to the hbase:meta table.

抛出:

IOException