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

Class CreateTableProcedure

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<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState>

org.apache.hadoop.hbase.master.procedure.CreateTableProcedure

All Implemented Interfaces:

Comparable<Procedure<MasterProcedureEnv>>, TableProcedureInterface

@Private
public class CreateTableProcedure
extends AbstractStateMachineTableProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	CreateTableProcedure.CreateHdfsRegions

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 static final org.slf4j.Logger	LOG
private static final int	MAX_REGION_REPLICATION
private List<RegionInfo>	newRegions
private RetryCounter	retryCounter
private TableDescriptor	tableDescriptor

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	Description
CreateTableProcedure()
CreateTableProcedure(MasterProcedureEnv env, TableDescriptor tableDescriptor, RegionInfo[] newRegions)
CreateTableProcedure(MasterProcedureEnv env, TableDescriptor tableDescriptor, RegionInfo[] newRegions, ProcedurePrepareLatch syncLatch)

Method Summary

Modifier and Type	Method	Description
private static void	addRegionsToMeta(MasterProcedureEnv env, TableDescriptor tableDescriptor, List<RegionInfo> regionInfos)	Add the specified set of regions to the hbase:meta table.
protected static List<RegionInfo>	addTableToMeta(MasterProcedureEnv env, TableDescriptor tableDescriptor, List<RegionInfo> regions)
protected static List<RegionInfo>	createFsLayout(MasterProcedureEnv env, TableDescriptor tableDescriptor, List<RegionInfo> newRegions)
protected static List<RegionInfo>	createFsLayout(MasterProcedureEnv env, TableDescriptor tableDescriptor, List<RegionInfo> newRegions, CreateTableProcedure.CreateHdfsRegions hdfsRegionHandler)
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.CreateTableState state)	called to perform a single step of the specified 'state' of the procedure
(package private) RegionInfo	getFirstRegionInfo()
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState	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.CreateTableState	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.CreateTableState state)	Convert the Enum (or more descriptive) state object to an ordinal (or state id).
TableName	getTableName()	Returns the name of the table the procedure is operating on
TableProcedureInterface.TableOperationType	getTableOperationType()	Given an operation type we can take decisions about what to do with pending operations.
protected boolean	isRollbackSupported(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState state)	Used by the default implementation of abort() to know if the current state can be aborted and rollback can be triggered.
private void	postCreate(MasterProcedureEnv env)
private void	preCreate(MasterProcedureEnv env)
private boolean	prepareCreate(MasterProcedureEnv env)
protected void	rollbackState(MasterProcedureEnv env, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState 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.
protected static void	setEnabledState(MasterProcedureEnv env, TableName tableName)
protected static void	setEnablingState(MasterProcedureEnv env, TableName tableName)
protected boolean	setTimeoutFailure(MasterProcedureEnv env)	Called by the ProcedureExecutor when the timeout set by setTimeout() is expired.
protected boolean	shouldWaitClientAck(MasterProcedureEnv env)	By default, the executor will keep the procedure result around util the eviction TTL is expired.
protected boolean	waitInitialized(MasterProcedureEnv env)	The Procedure.doAcquireLock(Object, ProcedureStore) will be split into two steps, first, it will call us to determine whether we need to wait for initialization, second, it will call Procedure.acquireLock(Object) to actually handle the lock for this procedure.

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

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

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

abort, addChildProcedure, execute, failIfAborted, getCurrentState, getCurrentStateId, getCycles, isEofState, isRollbackSupported, 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, setExecuted, setFailure, setFailure, setLastUpdate, setNonceKey, setOwner, setOwner, setParentProcId, setProcId, setResult, setRootProcId, setStackIndexes, setState, setSubmittedTime, setTimeout, 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

LOG

private static final org.slf4j.Logger LOG

MAX_REGION_REPLICATION

private static final int MAX_REGION_REPLICATION

See Also:

• Constant Field Values

tableDescriptor

private TableDescriptor tableDescriptor

newRegions

private List<RegionInfo> newRegions

retryCounter

private RetryCounter retryCounter

Constructor Details

CreateTableProcedure

public CreateTableProcedure()

CreateTableProcedure

public CreateTableProcedure(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 RegionInfo[] newRegions)

CreateTableProcedure

public CreateTableProcedure(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 RegionInfo[] newRegions,
 ProcedurePrepareLatch syncLatch)

Method Details

executeFromState

protected StateMachineProcedure.Flow executeFromState(MasterProcedureEnv env,
 org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState state)
                                               throws InterruptedException,
ProcedureSuspendedException

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.CreateTableState>

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

ProcedureSuspendedException

setTimeoutFailure

protected boolean setTimeoutFailure(MasterProcedureEnv env)

Description copied from class: Procedure

Called by the ProcedureExecutor when the timeout set by setTimeout() is expired.

Another usage for this method is to implement retrying. A procedure can set the state to WAITING_TIMEOUT by calling setState method, and throw a ProcedureSuspendedException to halt the execution of the procedure, and do not forget a call Procedure.setTimeout(int) method to set the timeout. And you should also override this method to wake up the procedure, and also return false to tell the ProcedureExecutor that the timeout event has been handled.

Overrides:

setTimeoutFailure in class Procedure<MasterProcedureEnv>

Returns:

true to let the framework handle the timeout as abort, false in case the procedure handled the timeout itself.

rollbackState

protected void rollbackState(MasterProcedureEnv env,
 org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState 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.CreateTableState>

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.CreateTableState 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.CreateTableState>

getState

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

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.CreateTableState 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.CreateTableState>

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.CreateTableState 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.CreateTableState>

Returns:

the initial state enum object

getTableName

public TableName getTableName()

Description copied from interface: TableProcedureInterface

Returns the name of the table the procedure is operating on

Specified by:

getTableName in interface TableProcedureInterface

Specified by:

getTableName in class AbstractStateMachineTableProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState>

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 AbstractStateMachineTableProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState>

Returns:

the operation type that the procedure is executing.

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.CreateTableState>

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.CreateTableState>

Parameters:

serializer - contains the serialized state

Throws:

IOException

waitInitialized

protected boolean waitInitialized(MasterProcedureEnv env)

Description copied from class: Procedure

The Procedure.doAcquireLock(Object, ProcedureStore) will be split into two steps, first, it will call us to determine whether we need to wait for initialization, second, it will call Procedure.acquireLock(Object) to actually handle the lock for this procedure.

This is because that when master restarts, we need to restore the lock state for all the procedures to not break the semantic if Procedure.holdLock(Object) is true. But the ProcedureExecutor will be started before the master finish initialization(as it is part of the initialization!), so we need to split the code into two steps, and when restore, we just restore the lock part and ignore the waitInitialized part. Otherwise there will be dead lock.

Overrides:

waitInitialized in class AbstractStateMachineTableProcedure<org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CreateTableState>

Returns:

true means we need to wait until the environment has been initialized, otherwise true.

prepareCreate

private boolean prepareCreate(MasterProcedureEnv env)
                       throws IOException

Throws:

IOException

preCreate

private void preCreate(MasterProcedureEnv env)
                throws IOException,
InterruptedException

Throws:

IOException

InterruptedException

postCreate

private void postCreate(MasterProcedureEnv env)
                 throws IOException,
InterruptedException

Throws:

IOException

InterruptedException

createFsLayout

protected static List<RegionInfo> createFsLayout(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 List<RegionInfo> newRegions)
                                          throws IOException

Throws:

IOException

createFsLayout

protected static List<RegionInfo> createFsLayout(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 List<RegionInfo> newRegions,
 CreateTableProcedure.CreateHdfsRegions hdfsRegionHandler)
                                          throws IOException

Throws:

IOException

addTableToMeta

protected static List<RegionInfo> addTableToMeta(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 List<RegionInfo> regions)
                                          throws IOException

Throws:

IOException

setEnablingState

protected static void setEnablingState(MasterProcedureEnv env,
 TableName tableName)
                                throws IOException

Throws:

IOException

setEnabledState

protected static void setEnabledState(MasterProcedureEnv env,
 TableName tableName)
                               throws IOException

Throws:

IOException

addRegionsToMeta

private static void addRegionsToMeta(MasterProcedureEnv env,
 TableDescriptor tableDescriptor,
 List<RegionInfo> regionInfos)
                              throws IOException

Add the specified set of regions to the hbase:meta table.

Throws:

IOException

shouldWaitClientAck

protected boolean shouldWaitClientAck(MasterProcedureEnv env)

Description copied from class: Procedure

By default, the executor will keep the procedure result around util the eviction TTL is expired. The client can cut down the waiting time by requesting that the result is removed from the executor. In case of system started procedure, we can force the executor to auto-ack.

Overrides:

shouldWaitClientAck in class Procedure<MasterProcedureEnv>

Parameters:

env - the environment passed to the ProcedureExecutor

Returns:

true if the executor should wait the client ack for the result. Defaults to return true.

getFirstRegionInfo

RegionInfo getFirstRegionInfo()