org.apache.hadoop.hbase.coordination

类 ZKSplitTransactionCoordination

java.lang.Object

org.apache.hadoop.hbase.coordination.ZKSplitTransactionCoordination

所有已实现的接口:

SplitTransactionCoordination

public class ZKSplitTransactionCoordination
extends Object
implements SplitTransactionCoordination

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ZKSplitTransactionCoordination.ZkSplitTransactionDetails ZK-based implementation.

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.coordination.SplitTransactionCoordination

SplitTransactionCoordination.SplitTransactionDetails

构造器概要

构造器

构造器和说明
ZKSplitTransactionCoordination(CoordinatedStateManager coordinationProvider, ZooKeeperWatcher watcher)

方法概要

方法

限定符和类型	方法和说明
void	clean(HRegionInfo hri) clean the split transaction
void	completeSplitTransaction(RegionServerServices services, Region a, Region b, SplitTransactionCoordination.SplitTransactionDetails std, Region parent) Finish off split transaction, transition the zknode
SplitTransactionCoordination.SplitTransactionDetails	getDefaultDetails()
int	processTransition(HRegionInfo p, HRegionInfo hri_a, HRegionInfo hri_b, ServerName sn, SplitTransactionCoordination.SplitTransactionDetails std) Required by AssignmentManager
void	startSplitTransaction(HRegion parent, ServerName serverName, HRegionInfo hri_a, HRegionInfo hri_b) Creates a new ephemeral node in the PENDING_SPLIT state for the specified region.
void	waitForSplitTransaction(RegionServerServices services, Region parent, HRegionInfo hri_a, HRegionInfo hri_b, SplitTransactionCoordination.SplitTransactionDetails sptd) Wait for the splitting node to be transitioned from pending_split to splitting by master.

从类继承的方法 java.lang.Object

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

构造器详细资料

ZKSplitTransactionCoordination

public ZKSplitTransactionCoordination(CoordinatedStateManager coordinationProvider,
                              ZooKeeperWatcher watcher)

方法详细资料

startSplitTransaction

public void startSplitTransaction(HRegion parent,
                         ServerName serverName,
                         HRegionInfo hri_a,
                         HRegionInfo hri_b)
                           throws IOException

Creates a new ephemeral node in the PENDING_SPLIT state for the specified region. Create it ephemeral in case regionserver dies mid-split.

Does not transition nodes from other states. If a node already exists for this region, an Exception will be thrown.

指定者:

startSplitTransaction 在接口中 SplitTransactionCoordination

参数:

parent - region to be created as offline

serverName - server event originates from

hri_a - daughter region

hri_b - daughter region

抛出:

IOException

waitForSplitTransaction

public void waitForSplitTransaction(RegionServerServices services,
                           Region parent,
                           HRegionInfo hri_a,
                           HRegionInfo hri_b,
                           SplitTransactionCoordination.SplitTransactionDetails sptd)
                             throws IOException

Wait for the splitting node to be transitioned from pending_split to splitting by master. That's how we are sure master has processed the event and is good with us to move on. If we don't get any update, we periodically transition the node so that master gets the callback. If the node is removed or is not in pending_split state any more, we abort the split.

指定者:

waitForSplitTransaction 在接口中 SplitTransactionCoordination

参数:

services - Used to online/offline regions.

parent - region

hri_a - daughter region

hri_b - daughter region

sptd - split transaction details

抛出:

IOException

completeSplitTransaction

public void completeSplitTransaction(RegionServerServices services,
                            Region a,
                            Region b,
                            SplitTransactionCoordination.SplitTransactionDetails std,
                            Region parent)
                              throws IOException

Finish off split transaction, transition the zknode

指定者:

completeSplitTransaction 在接口中 SplitTransactionCoordination

参数:

services - Used to online/offline regions.

a - daughter region

b - daughter region

std - split transaction details

parent -

抛出:

IOException - If thrown, transaction failed. Call SplitTransaction.rollback( Server, RegionServerServices)

clean

public void clean(HRegionInfo hri)

从接口复制的说明: SplitTransactionCoordination

clean the split transaction

指定者:

clean 在接口中 SplitTransactionCoordination

参数:

hri - node to delete

getDefaultDetails

public SplitTransactionCoordination.SplitTransactionDetails getDefaultDetails()

指定者:

getDefaultDetails 在接口中 SplitTransactionCoordination

processTransition

public int processTransition(HRegionInfo p,
                    HRegionInfo hri_a,
                    HRegionInfo hri_b,
                    ServerName sn,
                    SplitTransactionCoordination.SplitTransactionDetails std)
                      throws IOException

从接口复制的说明: SplitTransactionCoordination

Required by AssignmentManager

指定者:

processTransition 在接口中 SplitTransactionCoordination

抛出:

IOException