org.apache.hadoop.hbase.master.procedure

Class AbstractStateMachineTableProcedure<TState>

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>

All Implemented Interfaces:

Comparable<Procedure<MasterProcedureEnv>>, TableProcedureInterface

Direct Known Subclasses:

AbstractStateMachineRegionProcedure, CloneSnapshotProcedure, CreateTableProcedure, DeleteTableProcedure, DisableTableProcedure, EnableTableProcedure, GCMergedRegionsProcedure, GCMultipleMergedRegionsProcedure, InitMetaProcedure, MergeTableRegionsProcedure, ModifyTableProcedure, ReopenTableRegionsProcedure, RestoreSnapshotProcedure, TruncateTableProcedure

@InterfaceAudience.Private
public abstract class AbstractStateMachineTableProcedure<TState>
extends StateMachineProcedure<MasterProcedureEnv,TState>
implements TableProcedureInterface

Base class for all the Table procedures that want to use a StateMachineProcedure. It provides helpers like basic locking, sync latch, and toStringClassDetails().

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

NO_PROC_ID, NO_TIMEOUT

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractStateMachineTableProcedure()
protected	AbstractStateMachineTableProcedure(MasterProcedureEnv env)
protected	AbstractStateMachineTableProcedure(MasterProcedureEnv env, ProcedurePrepareLatch latch)

Method Summary

Modifier and Type	Method and Description
protected Procedure.LockState	acquireLock(MasterProcedureEnv env)
protected static void	checkOnline(MasterProcedureEnv env, RegionInfo ri) Check region is online.
protected void	checkTableModifiable(MasterProcedureEnv env) Check whether a table is modifiable - exists and either offline or online with config set
abstract TableName	getTableName()
abstract TableProcedureInterface.TableOperationType	getTableOperationType() Given an operation type we can take decisions about what to do with pending operations.
protected User	getUser()
protected org.apache.hadoop.fs.Path	getWALRegionDir(MasterProcedureEnv env, RegionInfo region)
protected void	preflightChecks(MasterProcedureEnv env, Boolean enabled) Check that cluster is up and master is running.
protected void	releaseLock(MasterProcedureEnv env)
protected void	releaseSyncLatch()
protected void	setUser(User user)
void	toStringClassDetails(StringBuilder sb)
protected boolean	waitInitialized(MasterProcedureEnv env)

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

abort, addChildProcedure, deserializeStateData, execute, executeFromState, failIfAborted, getCurrentState, getCurrentStateId, getCycles, getInitialState, getState, getStateId, isRollbackSupported, isYieldAfterExecutionStep, isYieldBeforeExecuteFromState, rollback, rollbackState, serializeStateData, 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

Constructor Detail

AbstractStateMachineTableProcedure

protected AbstractStateMachineTableProcedure()

AbstractStateMachineTableProcedure

protected AbstractStateMachineTableProcedure(MasterProcedureEnv env)

AbstractStateMachineTableProcedure

protected AbstractStateMachineTableProcedure(MasterProcedureEnv env,
                                             ProcedurePrepareLatch latch)

Parameters:

env - Uses this to set Procedure Owner at least.

Method Detail

getTableName

public abstract TableName getTableName()

Specified by:

getTableName in interface TableProcedureInterface

Returns:

the name of the table the procedure is operating on

getTableOperationType

public abstract 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

Returns:

the operation type that the procedure is executing.

toStringClassDetails

public void toStringClassDetails(StringBuilder sb)

Overrides:

toStringClassDetails in class Procedure<MasterProcedureEnv>

waitInitialized

protected boolean waitInitialized(MasterProcedureEnv env)

Overrides:

waitInitialized in class Procedure<MasterProcedureEnv>

acquireLock

protected Procedure.LockState acquireLock(MasterProcedureEnv env)

Overrides:

acquireLock in class Procedure<MasterProcedureEnv>

releaseLock

protected void releaseLock(MasterProcedureEnv env)

Overrides:

releaseLock in class Procedure<MasterProcedureEnv>

getUser

protected User getUser()

setUser

protected void setUser(User user)

releaseSyncLatch

protected void releaseSyncLatch()

checkTableModifiable

protected void checkTableModifiable(MasterProcedureEnv env)
                             throws IOException

Check whether a table is modifiable - exists and either offline or online with config set

Parameters:

env - MasterProcedureEnv

Throws:

IOException

getWALRegionDir

protected final org.apache.hadoop.fs.Path getWALRegionDir(MasterProcedureEnv env,
                                                          RegionInfo region)
                                                   throws IOException

Throws:

IOException

preflightChecks

protected void preflightChecks(MasterProcedureEnv env,
                               Boolean enabled)
                        throws HBaseIOException

Check that cluster is up and master is running. Check table is modifiable. If enabled, check table is enabled else check it is disabled. Call in Procedure constructor so can pass any exception to caller.

Parameters:

enabled - If true, check table is enabled and throw exception if not. If false, do the inverse. If null, do no table checks.

Throws:

HBaseIOException

checkOnline

protected static void checkOnline(MasterProcedureEnv env,
                                  RegionInfo ri)
                           throws DoNotRetryRegionException

Check region is online.

Throws:

DoNotRetryRegionException