Package org.apache.iotdb.confignode.procedure.impl.region

Class NotifyRegionMigrationProcedure

java.lang.Object

org.apache.iotdb.confignode.procedure.Procedure<Env>

org.apache.iotdb.confignode.procedure.impl.StateMachineProcedure<ConfigNodeProcedureEnv,TState>

org.apache.iotdb.confignode.procedure.impl.region.RegionOperationProcedure<NotifyRegionMigrationState>

org.apache.iotdb.confignode.procedure.impl.region.NotifyRegionMigrationProcedure

All Implemented Interfaces:

Comparable<Procedure<ConfigNodeProcedureEnv>>

public class NotifyRegionMigrationProcedure
extends RegionOperationProcedure<NotifyRegionMigrationState>

A procedure that notifies all DNs of the ongoing region migration procedure.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.iotdb.confignode.procedure.impl.StateMachineProcedure

StateMachineProcedure.Flow

Field Summary

Fields inherited from class org.apache.iotdb.confignode.procedure.impl.StateMachineProcedure

isGeneratedByPipe

Fields inherited from class org.apache.iotdb.confignode.procedure.Procedure

NO_PROC_ID, NO_TIMEOUT

Constructor Summary

Constructors

Constructor	Description
NotifyRegionMigrationProcedure()
NotifyRegionMigrationProcedure(TConsensusGroupId consensusGroupId, boolean isStart)

Method Summary

Modifier and Type	Method	Description
void	deserialize(ByteBuffer byteBuffer)
boolean	equals(Object obj)
protected StateMachineProcedure.Flow	executeFromState(ConfigNodeProcedureEnv env, NotifyRegionMigrationState state)	Called to perform a single step of the specified 'state' of the procedure.
protected NotifyRegionMigrationState	getInitialState()	Return the initial state object that will be used for the first call to executeFromState().
protected NotifyRegionMigrationState	getState(int stateId)	Convert an ordinal (or state id) to an Enum (or more descriptive) state object.
protected int	getStateId(NotifyRegionMigrationState state)	Convert the Enum (or more descriptive) state object to an ordinal (or state id).
int	hashCode()
protected void	rollbackState(ConfigNodeProcedureEnv configNodeProcedureEnv, NotifyRegionMigrationState state)	Called to perform the rollback of the specified state.
void	serialize(DataOutputStream stream)
String	toString()

Methods inherited from class org.apache.iotdb.confignode.procedure.impl.region.RegionOperationProcedure

getRegionId, setRegionId

Methods inherited from class org.apache.iotdb.confignode.procedure.impl.StateMachineProcedure

addChildProcedure, execute, getCurrentState, getCycles, isEofState, isRollbackSupported, isStateDeserialized, rollback, setNextState, toStringState

Methods inherited from class org.apache.iotdb.confignode.procedure.Procedure

acquireLock, addStackIndex, compareTo, deserializeTypeInfoForCompatibility, doAcquireLock, doExecute, doReleaseLock, doRollback, elapsedTime, getChildrenLatch, getException, getLastUpdate, getParentProcId, getProcId, getProcType, getResult, getRootProcId, getStackIndexes, getState, getSubmittedTime, getTimeout, getTimeoutTimestamp, hasChildren, hasException, hasLock, hasParent, hasTimeout, haveSameParent, holdLock, incChildrenLatch, isFailed, isFinished, isInitializing, isLockedWhenLoading, isRunnable, isSuccess, isWaiting, isYieldAfterExecution, releaseLock, removeStackIndex, restoreLock, setChildrenLatch, setFailure, setFailure, setLastUpdate, setParentProcId, setProcId, setProcRunnable, setResult, setRootProcedureId, setRootProcId, setStackIndexes, setState, setSubmittedTime, setTimeout, setTimeoutFailure, toStringClassDetails, toStringDetails, toStringSimpleSB, updateMetricsOnFinish, updateMetricsOnSubmit, updateTimestamp, wasExecuted

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

NotifyRegionMigrationProcedure

public NotifyRegionMigrationProcedure()

NotifyRegionMigrationProcedure

public NotifyRegionMigrationProcedure(TConsensusGroupId consensusGroupId,
 boolean isStart)

Method Details

executeFromState

protected StateMachineProcedure.Flow executeFromState(ConfigNodeProcedureEnv env,
 NotifyRegionMigrationState state)
                                               throws InterruptedException

Description copied from class: StateMachineProcedure

Called to perform a single step of the specified 'state' of the procedure.

Specified by:

executeFromState in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

state - state to execute

Returns:

Flow.NO_MORE_STATE if the procedure is completed, Flow.HAS_MORE_STATE if there is another step.

Throws:

InterruptedException

rollbackState

protected void rollbackState(ConfigNodeProcedureEnv configNodeProcedureEnv,
 NotifyRegionMigrationState state)
                      throws IOException,
InterruptedException,
ProcedureException

Description copied from class: StateMachineProcedure

Called to perform the rollback of the specified state.

Specified by:

rollbackState in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

state - state to rollback

Throws:

IOException - temporary failure, the rollback will retry later

InterruptedException

ProcedureException

getState

protected NotifyRegionMigrationState getState(int stateId)

Description copied from class: StateMachineProcedure

Convert an ordinal (or state id) to an Enum (or more descriptive) state object.

Specified by:

getState in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

Parameters:

stateId - the ordinal() of the state enum (or state id)

Returns:

the state enum object

getStateId

protected int getStateId(NotifyRegionMigrationState state)

Description copied from class: StateMachineProcedure

Convert the Enum (or more descriptive) state object to an ordinal (or state id).

Specified by:

getStateId in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

Parameters:

state - the state enum object

Returns:

stateId the ordinal() of the state enum (or state id)

getInitialState

protected NotifyRegionMigrationState getInitialState()

Description copied from class: StateMachineProcedure

Return the initial state object that will be used for the first call to executeFromState().

Specified by:

getInitialState in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

Returns:

the initial state enum object

serialize

public void serialize(DataOutputStream stream)
               throws IOException

Overrides:

serialize in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

Throws:

IOException

deserialize

public void deserialize(ByteBuffer byteBuffer)

Overrides:

deserialize in class StateMachineProcedure<ConfigNodeProcedureEnv,NotifyRegionMigrationState>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class RegionOperationProcedure<NotifyRegionMigrationState>