org.apache.hadoop.hbase.master.procedure

Class RecoverMetaProcedure

java.lang.Object

<any>

org.apache.hadoop.hbase.master.procedure.RecoverMetaProcedure

All Implemented Interfaces:

MetaProcedureInterface

public class RecoverMetaProcedure
extends <any>
implements MetaProcedureInterface

This procedure recovers meta from prior shutdown/ crash of a server, and brings meta online by assigning meta region/s. Any place where meta is accessed and requires meta to be online, need to submit this procedure instead of duplicating steps to recover meta in the code.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.master.procedure.MetaProcedureInterface

MetaProcedureInterface.MetaOperationType

Constructor Summary

Constructors

Constructor and Description
RecoverMetaProcedure() This constructor is also used when deserializing from a procedure store; we'll construct one of these then call #deserializeStateData(InputStream).
RecoverMetaProcedure(ServerName failedMetaServer, boolean shouldSplitLog) Call this constructor to queue up a RecoverMetaProcedure in response to meta carrying server crash
RecoverMetaProcedure(ServerName failedMetaServer, boolean shouldSplitLog, ProcedurePrepareLatch latch) Constructor with latch, for blocking/ sync usage

Method Summary

Modifier and Type	Method and Description
protected LockState	acquireLock(MasterProcedureEnv env)
protected void	completionCleanup(MasterProcedureEnv env)
protected void	deserializeStateData(ProcedureStateSerializer serializer)
protected Flow	executeFromState(MasterProcedureEnv env, MasterProcedureProtos.RecoverMetaState state)
protected MasterProcedureProtos.RecoverMetaState	getInitialState()
protected MasterProcedureProtos.RecoverMetaState	getState(int stateId)
protected int	getStateId(MasterProcedureProtos.RecoverMetaState recoverMetaState)
protected void	releaseLock(MasterProcedureEnv env)
protected void	rollbackState(MasterProcedureEnv env, MasterProcedureProtos.RecoverMetaState recoverMetaState)
protected void	serializeStateData(ProcedureStateSerializer serializer)
protected void	toStringClassDetails(java.lang.StringBuilder sb)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.master.procedure.MetaProcedureInterface

getMetaOperationType

Constructor Detail

RecoverMetaProcedure

public RecoverMetaProcedure(ServerName failedMetaServer,
                            boolean shouldSplitLog)

Call this constructor to queue up a RecoverMetaProcedure in response to meta carrying server crash

Parameters:

failedMetaServer - failed/ crashed region server that was carrying meta

shouldSplitLog - split log file of meta region

RecoverMetaProcedure

public RecoverMetaProcedure(ServerName failedMetaServer,
                            boolean shouldSplitLog,
                            ProcedurePrepareLatch latch)

Constructor with latch, for blocking/ sync usage

RecoverMetaProcedure

public RecoverMetaProcedure()

This constructor is also used when deserializing from a procedure store; we'll construct one of these then call #deserializeStateData(InputStream). Do not use directly.

Method Detail

executeFromState

protected Flow executeFromState(MasterProcedureEnv env,
                                MasterProcedureProtos.RecoverMetaState state)
                         throws ProcedureSuspendedException,
                                ProcedureYieldException,
                                java.lang.InterruptedException

Throws:

ProcedureSuspendedException

ProcedureYieldException

java.lang.InterruptedException

rollbackState

protected void rollbackState(MasterProcedureEnv env,
                             MasterProcedureProtos.RecoverMetaState recoverMetaState)
                      throws java.io.IOException,
                             java.lang.InterruptedException

Throws:

java.io.IOException

java.lang.InterruptedException

getState

protected MasterProcedureProtos.RecoverMetaState getState(int stateId)

getStateId

protected int getStateId(MasterProcedureProtos.RecoverMetaState recoverMetaState)

getInitialState

protected MasterProcedureProtos.RecoverMetaState getInitialState()

toStringClassDetails

protected void toStringClassDetails(java.lang.StringBuilder sb)

serializeStateData

protected void serializeStateData(ProcedureStateSerializer serializer)
                           throws java.io.IOException

Throws:

java.io.IOException

deserializeStateData

protected void deserializeStateData(ProcedureStateSerializer serializer)
                             throws java.io.IOException

Throws:

java.io.IOException

acquireLock

protected LockState acquireLock(MasterProcedureEnv env)

releaseLock

protected void releaseLock(MasterProcedureEnv env)

completionCleanup

protected void completionCleanup(MasterProcedureEnv env)