org.apache.oozie.command.coord

Class CoordUpdateXCommand

java.lang.Object

org.apache.oozie.command.XCommand<T>

org.apache.oozie.command.TransitionXCommand<String>

org.apache.oozie.command.SubmitTransitionXCommand

org.apache.oozie.command.coord.CoordSubmitXCommand

org.apache.oozie.command.coord.CoordUpdateXCommand

All Implemented Interfaces:

Callable<String>, XCallable<String>

public class CoordUpdateXCommand
extends CoordSubmitXCommand

This class provides the functionalities to update coordinator job XML and properties. It uses CoordSubmitXCommand functionality to validate XML and resolve all the variables or properties using job configurations.

Field Summary

Fields inherited from class org.apache.oozie.command.coord.CoordSubmitXCommand

conf, CONF_CHECK_MAX_FREQUENCY, CONF_DEFAULT_CONCURRENCY, CONF_DEFAULT_MAX_TIMEOUT, CONF_DEFAULT_THROTTLE, CONF_DEFAULT_TIMEOUT_NORMAL, CONF_MAT_THROTTLING_FACTOR, CONF_QUEUE_SIZE, CONFIG_DEFAULT, COORD_INPUT_EVENTS, COORD_INPUT_EVENTS_DATA_IN, COORD_OUTPUT_EVENTS, COORD_OUTPUT_EVENTS_DATA_OUT, COORDINATOR_XML_FILE, coordJob, dryrun, jpaService

Fields inherited from class org.apache.oozie.command.TransitionXCommand

insertList, job, updateList

Fields inherited from class org.apache.oozie.command.XCommand

DEFAULT_LOCK_TIMEOUT, DEFAULT_REQUEUE_DELAY, eventService, instrumentation, INSTRUMENTATION_GROUP, LOG, logInfo

Constructor Summary

Constructors

Constructor and Description
CoordUpdateXCommand(boolean dryrun, org.apache.hadoop.conf.Configuration conf, String jobId)
CoordUpdateXCommand(boolean dryrun, org.apache.hadoop.conf.Configuration conf, String jobId, boolean showDiff)

Method Summary

Methods

Modifier and Type	Method and Description
void	check(CoordinatorJobBean oldCoord, CoordinatorJobBean newCoord) Check.
String	getDryRun(CoordinatorJobBean job) Gets the dryrun output.
String	getEntityKey() Return the entity key for the command.
String	getKey() Get command key
protected boolean	isLockRequired() Indicate if the the command requires locking.
protected void	loadState() Load the necessary state to perform the precondition check and to execute the command.
void	notifyParent() This will be used to notify the parent about the status of that perticular job.
protected void	queueMaterializeTransitionXCommand(String jobId) Queue MaterializeTransitionXCommand
protected String	storeToDB(String xmlElement, org.jdom.Element eJob, CoordinatorJobBean coordJob) Write a coordinator job into database
protected String	submit() Submit the job
void	transitToNext() Transit to the next status based on the result of the Job.
protected void	verifyPrecondition() Verify the precondition for the command after a lock has been obtain, just before executing the command.

Methods inherited from class org.apache.oozie.command.coord.CoordSubmitXCommand

basicResolveAndIncludeDS, getJob, includeDataSets, initEvaluators, mergeDefaultConfig, performWrites, readAndValidateXml, readDefinition, resolveInitial, submitJob, updateJob

Methods inherited from class org.apache.oozie.command.SubmitTransitionXCommand

execute

Methods inherited from class org.apache.oozie.command.TransitionXCommand

generateEvents, setJob

Methods inherited from class org.apache.oozie.command.XCommand

call, call, eagerLoadState, eagerVerifyPrecondition, executeInterrupts, getCreatedTime, getInstrumentation, getLockTimeOut, getLog, getName, getPriority, getRequeueDelay, getType, inInterruptMode, isReQueueRequired, queue, queue, resetUsed, setInterruptMode, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CoordUpdateXCommand

public CoordUpdateXCommand(boolean dryrun,
                   org.apache.hadoop.conf.Configuration conf,
                   String jobId)

CoordUpdateXCommand

public CoordUpdateXCommand(boolean dryrun,
                   org.apache.hadoop.conf.Configuration conf,
                   String jobId,
                   boolean showDiff)

Method Detail

storeToDB

protected String storeToDB(String xmlElement,
               org.jdom.Element eJob,
               CoordinatorJobBean coordJob)
                    throws CommandException

Description copied from class: CoordSubmitXCommand

Write a coordinator job into database

Overrides:

storeToDB in class CoordSubmitXCommand

Parameters:

xmlElement - : Coordinator definition xml

eJob - : XML element of job

coordJob - : Coordinator job bean

Returns:

Job id

Throws:

CommandException - thrown if unable to save coordinator job to db

loadState

protected void loadState()
                  throws CommandException

Description copied from class: XCommand

Load the necessary state to perform the precondition check and to execute the command.

Subclasses must implement this method and load the state needed to do the precondition check and execute the command.

Overrides:

loadState in class CoordSubmitXCommand

Throws:

CommandException

verifyPrecondition

protected void verifyPrecondition()
                           throws CommandException

Description copied from class: XCommand

Verify the precondition for the command after a lock has been obtain, just before executing the command.

Overrides:

verifyPrecondition in class CoordSubmitXCommand

Throws:

CommandException - thrown if the precondition is not met.

submit

protected String submit()
                 throws CommandException

Description copied from class: SubmitTransitionXCommand

Submit the job

Overrides:

submit in class CoordSubmitXCommand

Returns:

the id

Throws:

CommandException - thrown if unable to submit

check

public void check(CoordinatorJobBean oldCoord,
         CoordinatorJobBean newCoord)
           throws CommandException

Check. Frequency can't be changed. EndTime can't be changed. StartTime can't be changed. AppName can't be changed Timeunit can't be changed. Timezone can't be changed

Parameters:

oldCoord - the old coord

newCoord - the new coord

Throws:

CommandException - the command exception

queueMaterializeTransitionXCommand

protected void queueMaterializeTransitionXCommand(String jobId)

Description copied from class: CoordSubmitXCommand

Queue MaterializeTransitionXCommand

Overrides:

queueMaterializeTransitionXCommand in class CoordSubmitXCommand

notifyParent

public void notifyParent()
                  throws CommandException

Description copied from class: TransitionXCommand

This will be used to notify the parent about the status of that perticular job.

Overrides:

notifyParent in class CoordSubmitXCommand

Throws:

CommandException

isLockRequired

protected boolean isLockRequired()

Description copied from class: XCommand

Indicate if the the command requires locking.

Subclasses should override this method if they require locking.

Overrides:

isLockRequired in class CoordSubmitXCommand

Returns:

true/false

getEntityKey

public String getEntityKey()

Description copied from class: XCommand

Return the entity key for the command.

Specified by:

getEntityKey in interface XCallable<String>

Overrides:

getEntityKey in class CoordSubmitXCommand

Returns:

the entity key for the command.

transitToNext

public void transitToNext()

Description copied from class: TransitionXCommand

Transit to the next status based on the result of the Job.

Overrides:

transitToNext in class SubmitTransitionXCommand

getKey

public String getKey()

Description copied from class: XCommand

Get command key

Specified by:

getKey in interface XCallable<String>

Overrides:

getKey in class XCommand<String>

Returns:

command key

getDryRun

public String getDryRun(CoordinatorJobBean job)
                 throws Exception

Description copied from class: CoordSubmitXCommand

Gets the dryrun output.

Overrides:

getDryRun in class CoordSubmitXCommand

Returns:

the dry run

Throws:

Exception - the exception