EnableTableProcedure (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.procedure2.Procedure<TEnvironment>
- - org.apache.hadoop.hbase.procedure2.StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState>
  - - org.apache.hadoop.hbase.master.procedure.EnableTableProcedure

All Implemented Interfaces:: Comparable<Procedure>, TableProcedureInterface

@InterfaceAudience.Private
public class EnableTableProcedure
extends StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState>
implements TableProcedureInterface

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.hadoop.hbase.procedure2.StateMachineProcedure
  StateMachineProcedure.Flow
- 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 AtomicBoolean`	`aborted`
`private static org.apache.commons.logging.Log`	`LOG`
`private boolean`	`skipTableStateCheck`
`private ProcedurePrepareLatch`	`syncLatch`
`private TableName`	`tableName`
`private Boolean`	`traceEnabled`
`private org.apache.hadoop.security.UserGroupInformation`	`user`

Constructor Summary

Constructors
Constructor and Description
`EnableTableProcedure()`
`EnableTableProcedure(MasterProcedureEnv env, TableName tableName, boolean skipTableStateCheck)` Constructor
`EnableTableProcedure(MasterProcedureEnv env, TableName tableName, boolean skipTableStateCheck, ProcedurePrepareLatch syncLatch)` Constructor

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`abort(MasterProcedureEnv env)` The abort() call is asynchronous and each procedure must decide how to deal with that, if they want to be abortable.
`protected boolean`	`acquireLock(MasterProcedureEnv env)` The user should override this method, and try to take a lock if necessary.
`void`	`deserializeStateData(InputStream stream)` Called on store load to allow the user to decode the previously serialized state.
`protected StateMachineProcedure.Flow`	`executeFromState(MasterProcedureEnv env, org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` called to perform a single step of the specified 'state' of the procedure
`protected org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState`	`getInitialState()` Return the initial state object that will be used for the first call to executeFromState().
`protected org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState`	`getState(int stateId)` Convert an ordinal (or state id) to an Enum (or more descriptive) state object.
`protected int`	`getStateId(org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` Convert the Enum (or more descriptive) state object to an ordinal (or state id).
`TableName`	`getTableName()`
`TableProcedureInterface.TableOperationType`	`getTableOperationType()` Given an operation type we can take decisions about what to do with pending operations.
`private Boolean`	`isTraceEnabled()` The procedure could be restarted from a different machine.
`private void`	`markRegionsOfflineDuringRecovery(MasterProcedureEnv env)` Mark regions of the table offline during recovery
`private static boolean`	`markRegionsOnline(MasterProcedureEnv env, TableName tableName)` Mark offline regions of the table online
`protected static void`	`markRegionsOnline(MasterProcedureEnv env, TableName tableName, Boolean retryRequired)` Mark offline regions of the table online with retry
`private void`	`postEnable(MasterProcedureEnv env, org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` Action after enabling table.
`private void`	`preEnable(MasterProcedureEnv env, org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` Action before enabling table.
`private boolean`	`prepareEnable(MasterProcedureEnv env)` Action before any real action of enabling table.
`private static Map<HRegionInfo,ServerName>`	`regionsToAssignWithServerName(MasterProcedureEnv env, List<Pair<HRegionInfo,ServerName>> regionsInMeta)`
`protected void`	`releaseLock(MasterProcedureEnv env)` The user should override this method, and release lock if necessary.
`protected void`	`rollbackState(MasterProcedureEnv env, org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` called to perform the rollback of the specified state
`private void`	`runCoprocessorAction(MasterProcedureEnv env, org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` Coprocessor Action.
`void`	`serializeStateData(OutputStream stream)` The user-level code of the procedure may have some state to persist (e.g.
`protected void`	`setNextState(org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)` Set the next state for the procedure.
`protected static void`	`setTableStateToEnabled(MasterProcedureEnv env, TableName tableName)` Mark table state to Enabled
`protected static void`	`setTableStateToEnabling(MasterProcedureEnv env, TableName tableName)` Mark table state to Enabling
`void`	`toStringClassDetails(StringBuilder sb)` Extend the toString() information with the procedure details e.g.

Methods inherited from class org.apache.hadoop.hbase.procedure2.StateMachineProcedure
execute, isYieldAfterExecutionStep, isYieldBeforeExecuteFromState, rollback, toStringState

Methods inherited from class org.apache.hadoop.hbase.procedure2.Procedure
addStackIndex, beforeReplay, childrenCountDown, compareTo, completionCleanup, convert, convert, createProcedureInfo, doExecute, doRollback, elapsedTime, getException, getLastUpdate, getNonceKey, getOwner, getParentProcId, getProcId, getProcIdHashCode, getResult, getRootProcedureId, getStackIndexes, getStartTime, getState, getTimeout, getTimeRemaining, hasException, hasOwner, hasParent, hasTimeout, incChildrenLatch, isFailed, isFinished, isSuccess, isWaiting, newInstance, removeStackIndex, setAbortFailure, setChildrenLatch, setFailure, setFailure, setNonceKey, setOwner, setParentProcId, setProcId, setResult, setStackIndexes, setStartTime, setState, setTimeout, setTimeoutFailure, shouldWaitClientAck, toString, toStringClass, toStringDetails, toStringSimpleSB, updateTimestamp, validateClass, 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.apache.commons.logging.Log LOG
```
  - aborted
```
private final AtomicBoolean aborted
```
  - syncLatch
```
private final ProcedurePrepareLatch syncLatch
```
  - tableName
```
private TableName tableName
```
  - skipTableStateCheck
```
private boolean skipTableStateCheck
```
  - user
```
private org.apache.hadoop.security.UserGroupInformation user
```
  - traceEnabled
```
private Boolean traceEnabled
```
- Constructor Detail
  - EnableTableProcedure
```
public EnableTableProcedure()
```
  - EnableTableProcedure
```
public EnableTableProcedure(MasterProcedureEnv env,
                    TableName tableName,
                    boolean skipTableStateCheck)
```
    Constructor
    
    Parameters:
    env - MasterProcedureEnv
    tableName - the table to operate on
    skipTableStateCheck - whether to check table state
  - EnableTableProcedure
```
public EnableTableProcedure(MasterProcedureEnv env,
                    TableName tableName,
                    boolean skipTableStateCheck,
                    ProcedurePrepareLatch syncLatch)
```
    Constructor
    
    Parameters:
    env - MasterProcedureEnv
    tableName - the table to operate on
    skipTableStateCheck - whether to check table state
- Method Detail
  - executeFromState
```
protected StateMachineProcedure.Flow executeFromState(MasterProcedureEnv env,
                                          org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState 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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    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.protobuf.generated.MasterProcedureProtos.EnableTableState 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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    state - state to rollback
    
    Throws:
    
    IOException - temporary failure, the rollback will retry later
  - getState
```
protected org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState 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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Parameters:
    stateId - the ordinal() of the state enum (or state id)
    
    Returns:
    the state enum object
  - getStateId
```
protected int getStateId(org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState 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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Parameters:
    state - the state enum object
    
    Returns:
    stateId the ordinal() of the state enum (or state id)
  - getInitialState
```
protected org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState 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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Returns:
    the initial state enum object
  - setNextState
```
protected void setNextState(org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)
```
    Description copied from class: StateMachineProcedure
    
    Set the next state for the procedure.
    
    Overrides:
    
    setNextState in class StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Parameters:
    state - the state enum object
  - abort
```
public boolean abort(MasterProcedureEnv env)
```
    Description copied from class: Procedure
    
    The abort() call is asynchronous and each procedure must decide how to deal with that, 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 where to abort to avoid leak and have a better control on what was executed and what not.
    
    Specified by:
    
    abort in class Procedure<MasterProcedureEnv>
  - acquireLock
```
protected boolean acquireLock(MasterProcedureEnv env)
```
    Description copied from class: Procedure
    
    The user should override this method, and try to take a lock if necessary. A lock can be anything, and it is up to the implementor. Example: in our Master we can execute request in parallel for different tables create t1 and create t2 can be executed at the same time. anything else on t1/t2 is queued waiting that specific table create to happen.
    
    Overrides:
    
    acquireLock in class Procedure<MasterProcedureEnv>
    
    Returns:
    true if the lock was acquired and false otherwise
  - releaseLock
```
protected void releaseLock(MasterProcedureEnv env)
```
    Description copied from class: Procedure
    
    The user should override this method, and release lock if necessary.
    
    Overrides:
    
    releaseLock in class Procedure<MasterProcedureEnv>
  - serializeStateData
```
public void serializeStateData(OutputStream stream)
                        throws IOException
```
    Description copied from class: Procedure
    
    The user-level code of the procedure may have some state to persist (e.g. input arguments) to be able to resume on failure.
    
    Overrides:
    
    serializeStateData in class StateMachineProcedure<MasterProcedureEnv,org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Parameters:
    stream - the stream that will contain the user serialized data
    
    Throws:
    
    IOException
  - deserializeStateData
```
public void deserializeStateData(InputStream stream)
                          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.protobuf.generated.MasterProcedureProtos.EnableTableState>
    
    Parameters:
    stream - the stream that contains the user serialized data
    
    Throws:
    
    IOException
  - toStringClassDetails
```
public void toStringClassDetails(StringBuilder sb)
```
    Description copied from class: Procedure
    
    Extend the toString() information with the procedure details e.g. className and parameters
    
    Overrides:
    
    toStringClassDetails in class Procedure<MasterProcedureEnv>
    
    Parameters:
    sb - the string builder to use to append the proc specific information
  - getTableName
```
public TableName getTableName()
```
    Specified by:
    
    getTableName in interface TableProcedureInterface
    
    Returns:
    the name of the table the procedure is operating on
  - 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
    
    Returns:
    the operation type that the procedure is executing.
  - prepareEnable
```
private boolean prepareEnable(MasterProcedureEnv env)
                       throws IOException
```
    Action before any real action of enabling table. Set the exception in the procedure instead of throwing it. This approach is to deal with backward compatible with 1.0.
    
    Parameters:
    env - MasterProcedureEnv
    
    Returns:
    whether the table passes the necessary checks
    
    Throws:
    
    IOException
  - preEnable
```
private void preEnable(MasterProcedureEnv env,
             org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)
                throws IOException,
                       InterruptedException
```
    Action before enabling table.
    
    Parameters:
    env - MasterProcedureEnv
    state - the procedure state
    
    Throws:
    
    IOException
    
    InterruptedException
  - setTableStateToEnabling
```
protected static void setTableStateToEnabling(MasterProcedureEnv env,
                           TableName tableName)
                                       throws HBaseException,
                                              IOException
```
    Mark table state to Enabling
    
    Parameters:
    env - MasterProcedureEnv
    tableName - the target table
    
    Throws:
    
    IOException
    
    HBaseException
  - markRegionsOnline
```
protected static void markRegionsOnline(MasterProcedureEnv env,
                     TableName tableName,
                     Boolean retryRequired)
                                 throws IOException
```
    Mark offline regions of the table online with retry
    
    Parameters:
    env - MasterProcedureEnv
    tableName - the target table
    retryRequired - whether to retry if the first run failed
    
    Throws:
    
    IOException
  - markRegionsOnline
```
private static boolean markRegionsOnline(MasterProcedureEnv env,
                        TableName tableName)
                                  throws IOException
```
    Mark offline regions of the table online
    
    Parameters:
    env - MasterProcedureEnv
    tableName - the target table
    
    Returns:
    whether the operation is fully completed or being interrupted.
    
    Throws:
    
    IOException
  - markRegionsOfflineDuringRecovery
```
private void markRegionsOfflineDuringRecovery(MasterProcedureEnv env)
```
    Mark regions of the table offline during recovery
    
    Parameters:
    env - MasterProcedureEnv
  - setTableStateToEnabled
```
protected static void setTableStateToEnabled(MasterProcedureEnv env,
                          TableName tableName)
                                      throws HBaseException,
                                             IOException
```
    Mark table state to Enabled
    
    Parameters:
    env - MasterProcedureEnv
    
    Throws:
    
    IOException
    
    HBaseException
  - postEnable
```
private void postEnable(MasterProcedureEnv env,
              org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)
                 throws IOException,
                        InterruptedException
```
    Action after enabling table.
    
    Parameters:
    env - MasterProcedureEnv
    state - the procedure state
    
    Throws:
    
    IOException
    
    InterruptedException
  - isTraceEnabled
```
private Boolean isTraceEnabled()
```
    The procedure could be restarted from a different machine. If the variable is null, we need to retrieve it.
    
    Returns:
    traceEnabled
  - regionsToAssignWithServerName
```
private static Map<HRegionInfo,ServerName> regionsToAssignWithServerName(MasterProcedureEnv env,
                                                        List<Pair<HRegionInfo,ServerName>> regionsInMeta)
                                                                  throws IOException
```
    Parameters:
    regionsInMeta -
    
    Returns:
    List of regions neither in transition nor assigned.
    
    Throws:
    
    IOException
  - runCoprocessorAction
```
private void runCoprocessorAction(MasterProcedureEnv env,
                        org.apache.hadoop.hbase.protobuf.generated.MasterProcedureProtos.EnableTableState state)
                           throws IOException,
                                  InterruptedException
```
    Coprocessor Action.
    
    Parameters:
    env - MasterProcedureEnv
    state - the procedure state
    
    Throws:
    
    IOException
    
    InterruptedException

Class EnableTableProcedure

Nested Class Summary

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

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

Field Summary

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Field Detail

LOG

aborted

syncLatch

tableName

skipTableStateCheck

user

traceEnabled

Constructor Detail

EnableTableProcedure

EnableTableProcedure

EnableTableProcedure

Method Detail

executeFromState

rollbackState

getState

getStateId

getInitialState

setNextState

abort

acquireLock

releaseLock

serializeStateData

deserializeStateData

toStringClassDetails

getTableName

getTableOperationType

prepareEnable

preEnable

setTableStateToEnabling

markRegionsOnline

markRegionsOnline

markRegionsOfflineDuringRecovery

setTableStateToEnabled

postEnable

isTraceEnabled

regionsToAssignWithServerName

runCoprocessorAction