org.apache.hadoop.hbase.regionserver

类 RegionMergeTransactionImpl

java.lang.Object

org.apache.hadoop.hbase.regionserver.RegionMergeTransactionImpl

所有已实现的接口:

RegionMergeTransaction

@InterfaceAudience.Private
public class RegionMergeTransactionImpl
extends Object
implements RegionMergeTransaction

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	RegionMergeTransactionImpl.JournalEntryImpl

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.regionserver.RegionMergeTransaction

RegionMergeTransaction.JournalEntry, RegionMergeTransaction.RegionMergeTransactionPhase, RegionMergeTransaction.TransactionListener

构造器概要

构造器

构造器和说明
RegionMergeTransactionImpl(Region a, Region b, boolean forcible) Constructor
RegionMergeTransactionImpl(Region a, Region b, boolean forcible, long masterSystemTime) Constructor

方法概要

方法

限定符和类型	方法和说明
Put	addLocation(Put p, ServerName sn, long openSeqNum)
HRegion	execute(Server server, RegionServerServices services) Run the transaction.
HRegion	execute(Server server, RegionServerServices services, User user) Run the transaction.
List<RegionMergeTransaction.JournalEntry>	getJournal() Get the journal for the transaction.
HRegionInfo	getMergedRegionInfo()
static HRegionInfo	getMergedRegionInfo(HRegionInfo a, HRegionInfo b) Get merged region info through the specified two regions
RegionServerServices	getRegionServerServices() Get the RegonServerServices of the server running the transaction or rollback
Server	getServer() Get the Server running the transaction or rollback
boolean	prepare(RegionServerServices services) Does checks on merge inputs.
void	prepareMutationsForMerge(HRegionInfo mergedRegion, HRegionInfo regionA, HRegionInfo regionB, ServerName serverName, List<Mutation> mutations, int regionReplication)
RegionMergeTransaction	registerTransactionListener(RegionMergeTransaction.TransactionListener listener) Register a listener for transaction preparation, execution, and possibly rollback phases.
boolean	rollback(Server server, RegionServerServices services) Roll back a failed transaction
boolean	rollback(Server server, RegionServerServices services, User user) Roll back a failed transaction
void	stepsAfterPONR(Server server, RegionServerServices services, HRegion mergedRegion) 已过时。
void	stepsAfterPONR(Server server, RegionServerServices services, HRegion mergedRegion, User user)
HRegion	stepsBeforePONR(Server server, RegionServerServices services, boolean testing)
String	toString()

从类继承的方法 java.lang.Object

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

构造器详细资料

RegionMergeTransactionImpl

public RegionMergeTransactionImpl(Region a,
                          Region b,
                          boolean forcible)

Constructor

参数:

a - region a to merge

b - region b to merge

forcible - if false, we will only merge adjacent regions

RegionMergeTransactionImpl

public RegionMergeTransactionImpl(Region a,
                          Region b,
                          boolean forcible,
                          long masterSystemTime)

Constructor

参数:

a - region a to merge

b - region b to merge

forcible - if false, we will only merge adjacent regions

masterSystemTime - the time at the master side

方法详细资料

prepare

public boolean prepare(RegionServerServices services)
                throws IOException

Does checks on merge inputs.

指定者:

prepare 在接口中 RegionMergeTransaction

参数:

services -

返回:

true if the regions are mergeable else false if they are not (e.g. its already closed, etc.).

抛出:

IOException

execute

public HRegion execute(Server server,
              RegionServerServices services)
                throws IOException

Run the transaction.

指定者:

execute 在接口中 RegionMergeTransaction

参数:

server - Hosting server instance. Can be null when testing

services - Used to online/offline regions.

返回:

merged region

抛出:

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

IOException

另请参阅:

rollback(Server, RegionServerServices)

execute

public HRegion execute(Server server,
              RegionServerServices services,
              User user)
                throws IOException

从接口复制的说明: RegionMergeTransaction

Run the transaction.

指定者:

execute 在接口中 RegionMergeTransaction

参数:

server - Hosting server instance. Can be null when testing

services - Used to online/offline regions.

返回:

merged region

抛出:

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

另请参阅:

RegionMergeTransaction.rollback(Server, RegionServerServices, User)

stepsAfterPONR

@Deprecated
public void stepsAfterPONR(Server server,
                             RegionServerServices services,
                             HRegion mergedRegion)
                    throws IOException

已过时。

抛出:

IOException

stepsAfterPONR

public void stepsAfterPONR(Server server,
                  RegionServerServices services,
                  HRegion mergedRegion,
                  User user)
                    throws IOException

抛出:

IOException

prepareMutationsForMerge

public void prepareMutationsForMerge(HRegionInfo mergedRegion,
                            HRegionInfo regionA,
                            HRegionInfo regionB,
                            ServerName serverName,
                            List<Mutation> mutations,
                            int regionReplication)
                              throws IOException

抛出:

IOException

addLocation

public Put addLocation(Put p,
              ServerName sn,
              long openSeqNum)

stepsBeforePONR

public HRegion stepsBeforePONR(Server server,
                      RegionServerServices services,
                      boolean testing)
                        throws IOException

抛出:

IOException

getMergedRegionInfo

public static HRegionInfo getMergedRegionInfo(HRegionInfo a,
                              HRegionInfo b)

Get merged region info through the specified two regions

参数:

a - merging region A

b - merging region B

返回:

the merged region info

rollback

public boolean rollback(Server server,
               RegionServerServices services)
                 throws IOException

从接口复制的说明: RegionMergeTransaction

Roll back a failed transaction

指定者:

rollback 在接口中 RegionMergeTransaction

参数:

server - Hosting server instance (May be null when testing).

services - Services of regionserver, used to online regions.

返回:

True if we successfully rolled back, false if we got to the point of no return and so now need to abort the server to minimize damage.

抛出:

IOException - If thrown, rollback failed. Take drastic action.

rollback

public boolean rollback(Server server,
               RegionServerServices services,
               User user)
                 throws IOException

从接口复制的说明: RegionMergeTransaction

Roll back a failed transaction

指定者:

rollback 在接口中 RegionMergeTransaction

参数:

server - Hosting server instance (May be null when testing).

services - Services of regionserver, used to online regions.

返回:

True if we successfully rolled back, false if we got to the point of no return and so now need to abort the server to minimize damage.

抛出:

IOException - If thrown, rollback failed. Take drastic action.

getMergedRegionInfo

public HRegionInfo getMergedRegionInfo()

指定者:

getMergedRegionInfo 在接口中 RegionMergeTransaction

返回:

merged region info

getJournal

public List<RegionMergeTransaction.JournalEntry> getJournal()

从接口复制的说明: RegionMergeTransaction

Get the journal for the transaction.

Journal entries are an opaque type represented as JournalEntry. They can also provide useful debugging information via their toString method.

指定者:

getJournal 在接口中 RegionMergeTransaction

返回:

the transaction journal

registerTransactionListener

public RegionMergeTransaction registerTransactionListener(RegionMergeTransaction.TransactionListener listener)

从接口复制的说明: RegionMergeTransaction

Register a listener for transaction preparation, execution, and possibly rollback phases.

A listener can abort a transaction by throwing an exception.

指定者:

registerTransactionListener 在接口中 RegionMergeTransaction

参数:

listener - the listener

返回:

'this' for chaining

getServer

public Server getServer()

从接口复制的说明: RegionMergeTransaction

Get the Server running the transaction or rollback

指定者:

getServer 在接口中 RegionMergeTransaction

返回:

server instance

getRegionServerServices

public RegionServerServices getRegionServerServices()

从接口复制的说明: RegionMergeTransaction

Get the RegonServerServices of the server running the transaction or rollback

指定者:

getRegionServerServices 在接口中 RegionMergeTransaction

返回:

region server services

toString

public String toString()

覆盖:

toString 在类中 Object