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

Class DeleteTableProcedure

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.DeleteTableState>

org.apache.hadoop.hbase.master.procedure.DeleteTableProcedure

All Implemented Interfaces:

Comparable<Procedure<MasterProcedureEnv>>, TableProcedureInterface

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

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 static final org.slf4j.Logger	LOG
private List<RegionInfo>	regions
private RetryCounter	retryCounter
private TableName	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

Constructor Summary

Constructors

Constructor	Description
DeleteTableProcedure()
DeleteTableProcedure(MasterProcedureEnv env, TableName tableName)
DeleteTableProcedure(MasterProcedureEnv env, TableName tableName, ProcedurePrepareLatch syncLatch)

Method Summary

Modifier and Type	Method	Description
protected boolean	abort(MasterProcedureEnv env)	The abort() call is asynchronous and each procedure must decide how to deal with it, if they want to be abortable.
private static void	cleanRegionsInMeta(MasterProcedureEnv env, TableName tableName)	There may be items for this table still up in hbase:meta in the case where the info:regioninfo column was empty because of some write error.
protected static void	deleteAssignmentState(MasterProcedureEnv env, TableName tableName)
protected static void	deleteFromFs(MasterProcedureEnv env, TableName tableName, List<RegionInfo> regions, boolean archive)
protected static void	deleteFromMeta(MasterProcedureEnv env, TableName tableName, List<RegionInfo> regions)
protected static void	deleteTableDescriptorCache(MasterProcedureEnv env, TableName tableName)
protected static void	deleteTableStates(MasterProcedureEnv env, TableName tableName)
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.DeleteTableState state)	called to perform a single step of the specified 'state' of the procedure
protected org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DeleteTableState	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.DeleteTableState	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.DeleteTableState 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	holdLock(MasterProcedureEnv env)	Used to keep the procedure lock even when the procedure is yielding or suspended.
protected boolean	isRollbackSupported(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DeleteTableState state)	Used by the default implementation of abort() to know if the current state can be aborted and rollback can be triggered.
private void	postDelete(MasterProcedureEnv env)
private boolean	preDelete(MasterProcedureEnv env)
private boolean	prepareDelete(MasterProcedureEnv env)
protected void	rollbackState(MasterProcedureEnv env, org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DeleteTableState 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 boolean	setTimeoutFailure(MasterProcedureEnv env)	Called by the ProcedureExecutor when the timeout set by setTimeout() is expired.

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

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

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

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, 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

LOG

private static final org.slf4j.Logger LOG

regions

private List<RegionInfo> regions

tableName

private TableName tableName

retryCounter

private RetryCounter retryCounter

Constructor Details

DeleteTableProcedure

public DeleteTableProcedure()

DeleteTableProcedure

public DeleteTableProcedure(MasterProcedureEnv env,
 TableName tableName)

DeleteTableProcedure

public DeleteTableProcedure(MasterProcedureEnv env,
 TableName tableName,
 ProcedurePrepareLatch syncLatch)

Method Details

executeFromState

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

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.

abort

protected boolean abort(MasterProcedureEnv env)

Description copied from class: Procedure

The abort() call is asynchronous and each procedure must decide how to deal with it, if they want to be abortable. The simplest implementation is to have an AtomicBoolean set in the abort() method and then the execute() will check if the abort flag is set or not. abort() may be called multiple times from the client, so the implementation must be idempotent.

NOTE: abort() is not like Thread.interrupt(). It is just a notification that allows the procedure implementor abort.

Overrides:

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

rollbackState

protected void rollbackState(MasterProcedureEnv env,
 org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DeleteTableState state)

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.DeleteTableState>

state - state to rollback

isRollbackSupported

protected boolean isRollbackSupported(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.DeleteTableState 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.DeleteTableState>

getState

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

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.DeleteTableState 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.DeleteTableState>

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.DeleteTableState 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.DeleteTableState>

Returns:

the initial state enum object

holdLock

protected boolean holdLock(MasterProcedureEnv env)

Description copied from class: Procedure

Used to keep the procedure lock even when the procedure is yielding or suspended.

Overrides:

holdLock in class Procedure<MasterProcedureEnv>

Returns:

true if the procedure should hold on the lock until completionCleanup()

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.DeleteTableState>

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.DeleteTableState>

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.DeleteTableState>

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.DeleteTableState>

Parameters:

serializer - contains the serialized state

Throws:

IOException

prepareDelete

private boolean prepareDelete(MasterProcedureEnv env)
                       throws IOException

Throws:

IOException

preDelete

private boolean preDelete(MasterProcedureEnv env)
                   throws IOException,
InterruptedException

Throws:

IOException

InterruptedException

postDelete

private void postDelete(MasterProcedureEnv env)
                 throws IOException,
InterruptedException

Throws:

IOException

InterruptedException

deleteFromFs

protected static void deleteFromFs(MasterProcedureEnv env,
 TableName tableName,
 List<RegionInfo> regions,
 boolean archive)
                            throws IOException

Throws:

IOException

cleanRegionsInMeta

private static void cleanRegionsInMeta(MasterProcedureEnv env,
 TableName tableName)
                                throws IOException

There may be items for this table still up in hbase:meta in the case where the info:regioninfo column was empty because of some write error. Remove ALL rows from hbase:meta that have to do with this table.

See HBASE-12980.

Throws:

IOException

deleteFromMeta

protected static void deleteFromMeta(MasterProcedureEnv env,
 TableName tableName,
 List<RegionInfo> regions)
                              throws IOException

Throws:

IOException

deleteAssignmentState

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

Throws:

IOException

deleteTableDescriptorCache

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

Throws:

IOException

deleteTableStates

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

Throws:

IOException