org.apache.hadoop.hbase.master.procedure

Class ModifyNamespaceProcedure

java.lang.Object

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

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

org.apache.hadoop.hbase.master.procedure.AbstractStateMachineNamespaceProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState>

org.apache.hadoop.hbase.master.procedure.ModifyNamespaceProcedure

All Implemented Interfaces:

Comparable<Procedure<MasterProcedureEnv>>, TableProcedureInterface

@InterfaceAudience.Private
public class ModifyNamespaceProcedure
extends AbstractStateMachineNamespaceProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState>

The procedure to add a namespace to an existing table.

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 and Description
private static org.slf4j.Logger	LOG
private NamespaceDescriptor	newNsDescriptor
private NamespaceDescriptor	oldNsDescriptor
private Boolean	traceEnabled

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

Constructor Summary

Constructors

Constructor and Description
ModifyNamespaceProcedure()
ModifyNamespaceProcedure(MasterProcedureEnv env, NamespaceDescriptor newNsDescriptor)
ModifyNamespaceProcedure(MasterProcedureEnv env, NamespaceDescriptor newNsDescriptor, ProcedurePrepareLatch latch)

Method Summary

Modifier and Type	Method and Description
protected void	deserializeStateData(ProcedureStateSerializer serializer) Called on store load to allow the user to decode the previously serialized state.
protected StateMachineProcedure.Flow	executeFromState(MasterProcedureEnv env, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState state) called to perform a single step of the specified 'state' of the procedure
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState	getInitialState() Return the initial state object that will be used for the first call to executeFromState().
protected String	getNamespaceName()
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState	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.ModifyNamespaceState state) Convert the Enum (or more descriptive) state object to an ordinal (or state id).
private TableNamespaceManager	getTableNamespaceManager(MasterProcedureEnv env)
TableProcedureInterface.TableOperationType	getTableOperationType() Given an operation type we can take decisions about what to do with pending operations.
private void	insertIntoNSTable(MasterProcedureEnv env) Insert/update the row into namespace table
protected boolean	isRollbackSupported(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState state) Used by the default implementation of abort() to know if the current state can be aborted and rollback can be triggered.
private Boolean	isTraceEnabled() The procedure could be restarted from a different machine.
private boolean	prepareModify(MasterProcedureEnv env) Action before any real action of adding namespace.
protected void	rollbackState(MasterProcedureEnv env, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState state) called to perform the rollback of the specified state
protected void	serializeStateData(ProcedureStateSerializer serializer) The user-level code of the procedure may have some state to persist (e.g.
private void	updateZKNamespaceManager(MasterProcedureEnv env) Update ZooKeeper.

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

acquireLock, getTableName, releaseLock, releaseSyncLatch, toStringClassDetails, waitInitialized

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

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

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

addStackIndex, afterReplay, 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, setFailure, setFailure, setLastUpdate, setNonceKey, setOwner, setOwner, setParentProcId, setProcId, setResult, setRootProcId, setStackIndexes, setState, setSubmittedTime, setTimeout, setTimeoutFailure, shouldWaitClientAck, skipPersistence, 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 Detail

LOG

private static final org.slf4j.Logger LOG

oldNsDescriptor

private NamespaceDescriptor oldNsDescriptor

newNsDescriptor

private NamespaceDescriptor newNsDescriptor

traceEnabled

private Boolean traceEnabled

Constructor Detail

ModifyNamespaceProcedure

public ModifyNamespaceProcedure()

ModifyNamespaceProcedure

public ModifyNamespaceProcedure(MasterProcedureEnv env,
                                NamespaceDescriptor newNsDescriptor)

ModifyNamespaceProcedure

public ModifyNamespaceProcedure(MasterProcedureEnv env,
                                NamespaceDescriptor newNsDescriptor,
                                ProcedurePrepareLatch latch)

Method Detail

executeFromState

protected StateMachineProcedure.Flow executeFromState(MasterProcedureEnv env,
                                                      org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState 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<MasterProcedureEnv,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState>

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(MasterProcedureEnv env,
                             org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState state)
                      throws IOException

Description copied from class: StateMachineProcedure

called to perform the rollback of the specified state

Specified by:

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

state - state to rollback

Throws:

IOException - temporary failure, the rollback will retry later

isRollbackSupported

protected boolean isRollbackSupported(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState state)

Description copied from class: StateMachineProcedure

Used by the default implementation of abort() to know if the current state can be aborted and rollback can be triggered.

Overrides:

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

getState

protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState 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.ModifyNamespaceState>

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.ModifyNamespaceState 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.ModifyNamespaceState>

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.ModifyNamespaceState 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.ModifyNamespaceState>

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.ModifyNamespaceState>

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.ModifyNamespaceState>

Parameters:

serializer - contains the serialized state

Throws:

IOException

getTableOperationType

public TableProcedureInterface.TableOperationType getTableOperationType()

Description copied from interface: TableProcedureInterface

Given an operation type we can take decisions about what to do with pending operations. e.g. if we get a delete and we have some table operation pending (e.g. add column) we can abort those operations.

Specified by:

getTableOperationType in interface TableProcedureInterface

Specified by:

getTableOperationType in class AbstractStateMachineNamespaceProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState>

Returns:

the operation type that the procedure is executing.

getNamespaceName

protected String getNamespaceName()

Specified by:

getNamespaceName in class AbstractStateMachineNamespaceProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.ModifyNamespaceState>

prepareModify

private boolean prepareModify(MasterProcedureEnv env)
                       throws IOException

Action before any real action of adding namespace.

Parameters:

env - MasterProcedureEnv n

Throws:

IOException

insertIntoNSTable

private void insertIntoNSTable(MasterProcedureEnv env)
                        throws IOException

Insert/update the row into namespace table

Parameters:

env - MasterProcedureEnv n

Throws:

IOException

updateZKNamespaceManager

private void updateZKNamespaceManager(MasterProcedureEnv env)
                               throws IOException

Update ZooKeeper.

Parameters:

env - MasterProcedureEnv n

Throws:

IOException

getTableNamespaceManager

private TableNamespaceManager getTableNamespaceManager(MasterProcedureEnv env)

isTraceEnabled

private Boolean isTraceEnabled()

The procedure could be restarted from a different machine. If the variable is null, we need to retrieve it. n