Package org.apache.hadoop.hbase.master.procedure

Class CloseExcessRegionReplicasProcedure

java.lang.Object

org.apache.hadoop.hbase.procedure2.Procedure<TEnvironment>

org.apache.hadoop.hbase.procedure2.StateMachineProcedure<MasterProcedureEnv,TState>

org.apache.hadoop.hbase.master.procedure.AbstractStateMachineTableProcedure<TState>

org.apache.hadoop.hbase.master.procedure.AbstractCloseTableRegionsProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

org.apache.hadoop.hbase.master.procedure.CloseExcessRegionReplicasProcedure

All Implemented Interfaces:

Comparable<Procedure<MasterProcedureEnv>>, TableProcedureInterface

@Private
public class CloseExcessRegionReplicasProcedure
extends AbstractCloseTableRegionsProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Procedure for close excess region replicas.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.procedure2.StateMachineProcedure

StateMachineProcedure.Flow

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.procedure2.Procedure

Procedure.LockState

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

TableProcedureInterface.TableOperationType

Field Summary

Fields

Modifier and Type	Field	Description
private int	newReplicaCount

Fields inherited from class org.apache.hadoop.hbase.master.procedure.AbstractCloseTableRegionsProcedure

tableName

Fields inherited from class org.apache.hadoop.hbase.procedure2.StateMachineProcedure

stateCount

Fields inherited from class org.apache.hadoop.hbase.procedure2.Procedure

NO_PROC_ID, NO_TIMEOUT

Fields inherited from interface org.apache.hadoop.hbase.master.procedure.TableProcedureInterface

DUMMY_NAMESPACE_TABLE_NAME

Constructor Summary

Constructors

Constructor	Description
CloseExcessRegionReplicasProcedure()
CloseExcessRegionReplicasProcedure(TableName tableName, int newReplicaCount)

Method Summary

Modifier and Type	Method	Description
protected void	deserializeStateData(ProcedureStateSerializer serializer)	Called on store load to allow the user to decode the previously serialized state.
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState	getConfirmState()	We have two state for this type of procedures, the initial state for scheduling unassign procedures, and the confirm state for checking whether we have unassigned all the regions.
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState	getInitialState()	Return the initial state object that will be used for the first call to executeFromState().
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState	getState(int stateId)	Convert an ordinal (or state id) to an Enum (or more descriptive) state object.
protected int	getStateId(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState state)	Convert the Enum (or more descriptive) state object to an ordinal (or state id).
protected int	numberOfUnclosedRegions(MasterProcedureEnv env)	Return the number of uncloses regions.
protected void	serializeStateData(ProcedureStateSerializer serializer)	The user-level code of the procedure may have some state to persist (e.g.
protected int	submitUnassignProcedure(MasterProcedureEnv env, Consumer<TransitRegionStateProcedure> submit)	Submit TRSP for unassigning regions.

Methods inherited from class org.apache.hadoop.hbase.master.procedure.AbstractCloseTableRegionsProcedure

executeFromState, getTableName, getTableOperationType, rollbackState, setTimeoutFailure

Methods inherited from class org.apache.hadoop.hbase.master.procedure.AbstractStateMachineTableProcedure

acquireLock, checkOnline, checkTableModifiable, getUser, getWALRegionDir, isTableEnabled, isTableModificationInProgress, preflightChecks, releaseLock, releaseSyncLatch, setUser, toStringClassDetails, waitInitialized

Methods inherited from class org.apache.hadoop.hbase.procedure2.StateMachineProcedure

abort, addChildProcedure, execute, failIfAborted, getCurrentState, getCurrentStateId, getCycles, isEofState, isRollbackSupported, isRollbackSupported, isYieldAfterExecutionStep, isYieldBeforeExecuteFromState, rollback, setNextState, toStringState

Methods inherited from class org.apache.hadoop.hbase.procedure2.Procedure

addStackIndex, afterExec, afterReplay, beforeExec, beforeReplay, bypass, compareTo, completionCleanup, doExecute, doRollback, elapsedTime, getChildrenLatch, getException, getLastUpdate, getNonceKey, getOwner, getParentProcId, getProcedureMetrics, getProcId, getProcIdHashCode, getProcName, getResult, getRootProcedureId, getRootProcId, getStackIndexes, getState, getSubmittedTime, getTimeout, getTimeoutTimestamp, hasChildren, hasException, hasLock, hasOwner, hasParent, hasTimeout, haveSameParent, holdLock, incChildrenLatch, isBypass, isFailed, isFinished, isInitializing, isLockedWhenLoading, isRunnable, isSuccess, isWaiting, removeStackIndex, setAbortFailure, setChildrenLatch, setExecuted, setFailure, setFailure, setLastUpdate, setNonceKey, setOwner, setOwner, setParentProcId, setProcId, setResult, setRootProcId, setStackIndexes, setState, setSubmittedTime, setTimeout, shouldWaitClientAck, skipPersistence, suspend, toString, toStringClass, toStringDetails, toStringSimpleSB, updateMetricsOnFinish, updateMetricsOnSubmit, updateTimestamp, wasExecuted

Methods inherited from class java.lang.Object

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

Field Details

newReplicaCount

private int newReplicaCount

Constructor Details

CloseExcessRegionReplicasProcedure

public CloseExcessRegionReplicasProcedure()

CloseExcessRegionReplicasProcedure

public CloseExcessRegionReplicasProcedure(TableName tableName,
 int newReplicaCount)

Method Details

getState

protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState 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<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Parameters:

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

Returns:

the state enum object

getStateId

protected int getStateId(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState 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<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Parameters:

state - the state enum object

Returns:

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

getInitialState

protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState 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<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Returns:

the initial state enum object

serializeStateData

protected void serializeStateData(ProcedureStateSerializer serializer)
                           throws IOException

Description copied from class: Procedure

The user-level code of the procedure may have some state to persist (e.g. input arguments or current position in the processing state) to be able to resume on failure.

Overrides:

serializeStateData in class StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Parameters:

serializer - stores the serializable state

Throws:

IOException

deserializeStateData

protected void deserializeStateData(ProcedureStateSerializer serializer)
                             throws IOException

Description copied from class: Procedure

Called on store load to allow the user to decode the previously serialized state.

Overrides:

deserializeStateData in class StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Parameters:

serializer - contains the serialized state

Throws:

IOException

getConfirmState

protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState getConfirmState()

Description copied from class: AbstractCloseTableRegionsProcedure

We have two state for this type of procedures, the initial state for scheduling unassign procedures, and the confirm state for checking whether we have unassigned all the regions.

Specified by:

getConfirmState in class AbstractCloseTableRegionsProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

Returns:

the confirm state

submitUnassignProcedure

protected int submitUnassignProcedure(MasterProcedureEnv env,
 Consumer<TransitRegionStateProcedure> submit)

Description copied from class: AbstractCloseTableRegionsProcedure

Submit TRSP for unassigning regions. Return the number of regions in RIT state that we can not schedule TRSP for them.

Specified by:

submitUnassignProcedure in class AbstractCloseTableRegionsProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>

numberOfUnclosedRegions

protected int numberOfUnclosedRegions(MasterProcedureEnv env)

Description copied from class: AbstractCloseTableRegionsProcedure

Return the number of uncloses regions. Returning 0 means we are done.

Specified by:

numberOfUnclosedRegions in class AbstractCloseTableRegionsProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloseExcessRegionReplicasProcedureState>