org.apache.oozie.action.hadoop
Class FsActionExecutor

java.lang.Object
  org.apache.oozie.action.ActionExecutor
      org.apache.oozie.action.hadoop.FsActionExecutor

public class FsActionExecutor
extends ActionExecutor

File system action executor.

This executes the file system mkdir, move and delete commands

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.oozie.action.ActionExecutor

ActionExecutor.Context

Field Summary

Fields inherited from class org.apache.oozie.action.ActionExecutor

CONF_PREFIX, ERROR_OTHER, MAX_RETRIES, RETRY_INTERVAL

Constructor Summary

FsActionExecutor()

Method Summary

void	check(ActionExecutor.Context context, WorkflowAction action) Check if an action has completed.
void	delete(ActionExecutor.Context context, org.apache.hadoop.fs.Path path) Delete path
void	delete(java.lang.String user, java.lang.String group, org.apache.hadoop.fs.Path path) Delete path
void	end(ActionExecutor.Context context, WorkflowAction action) End an action after it has executed.
org.apache.hadoop.fs.Path	getRecoveryPath(ActionExecutor.Context context)
boolean	isCompleted(java.lang.String externalStatus) Return if the external status indicates that the action has completed.
void	kill(ActionExecutor.Context context, WorkflowAction action) Kill an action.
void	move(ActionExecutor.Context context, org.apache.hadoop.fs.Path source, org.apache.hadoop.fs.Path target, boolean recovery) Move source to target
void	start(ActionExecutor.Context context, WorkflowAction action) Start an action.

Methods inherited from class org.apache.oozie.action.ActionExecutor

convertException, disableInit, enableInit, getActionDir, getActionDirPath, getActionSignal, getMaxRetries, getOozieConf, getOozieRuntimeDir, getOozieSystemId, getRetryInterval, getType, initActionType, registerError, resetInitInfo, setMaxRetries, setRetryInterval

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FsActionExecutor

public FsActionExecutor()

Method Detail

delete

public void delete(ActionExecutor.Context context,
                   org.apache.hadoop.fs.Path path)
            throws ActionExecutorException

Delete path

Parameters:

context -

path -

Throws:

ActionExecutorException

delete

public void delete(java.lang.String user,
                   java.lang.String group,
                   org.apache.hadoop.fs.Path path)
            throws ActionExecutorException

Delete path

Parameters:

user -

group -

path -

Throws:

ActionExecutorException

move

public void move(ActionExecutor.Context context,
                 org.apache.hadoop.fs.Path source,
                 org.apache.hadoop.fs.Path target,
                 boolean recovery)
          throws ActionExecutorException

Move source to target

Parameters:

context -

source -

target -

recovery -

Throws:

ActionExecutorException

check

public void check(ActionExecutor.Context context,
                  WorkflowAction action)
           throws ActionExecutorException

Description copied from class: ActionExecutor

Check if an action has completed. This method must be implemented by Async Action Executors.

If the action has completed, the ActionExecutor.Context.setExecutionData(java.lang.String, java.util.Properties) method must be called within this method.

If the action has not completed, the ActionExecutor.Context.setExternalStatus(java.lang.String) method must be called within this method.

Specified by:

check in class ActionExecutor

Parameters:

context - executor context.

action - the action to end.

Throws:

ActionExecutorException - thrown if the action could not be checked.

kill

public void kill(ActionExecutor.Context context,
                 WorkflowAction action)
          throws ActionExecutorException

Description copied from class: ActionExecutor

Kill an action.

The ActionExecutor.Context.setEndData(org.apache.oozie.client.WorkflowAction.Status, java.lang.String) method must be called within this method.

Specified by:

kill in class ActionExecutor

Parameters:

context - executor context.

action - the action to kill.

Throws:

ActionExecutorException - thrown if the action could not be killed.

start

public void start(ActionExecutor.Context context,
                  WorkflowAction action)
           throws ActionExecutorException

Description copied from class: ActionExecutor

Start an action.

The ActionExecutor.Context.setStartData(java.lang.String, java.lang.String, java.lang.String) method must be called within this method.

If the action has completed, the ActionExecutor.Context.setExecutionData(java.lang.String, java.util.Properties) method must be called within this method.

Specified by:

start in class ActionExecutor

Parameters:

context - executor context.

action - the action to start.

Throws:

ActionExecutorException - thrown if the action could not start.

end

public void end(ActionExecutor.Context context,
                WorkflowAction action)
         throws ActionExecutorException

Description copied from class: ActionExecutor

End an action after it has executed.

The ActionExecutor.Context.setEndData(org.apache.oozie.client.WorkflowAction.Status, java.lang.String) method must be called within this method.

Specified by:

end in class ActionExecutor

Parameters:

context - executor context.

action - the action to end.

Throws:

ActionExecutorException - thrown if the action could not end.

isCompleted

public boolean isCompleted(java.lang.String externalStatus)

Description copied from class: ActionExecutor

Return if the external status indicates that the action has completed.

Specified by:

isCompleted in class ActionExecutor

Parameters:

externalStatus - external status to check.

Returns:

if the external status indicates that the action has completed.

getRecoveryPath

public org.apache.hadoop.fs.Path getRecoveryPath(ActionExecutor.Context context)
                                          throws HadoopAccessorException,
                                                 java.io.IOException,
                                                 java.net.URISyntaxException

Parameters:

context -

Returns:

Throws:

HadoopAccessorException

java.io.IOException

java.net.URISyntaxException