Class Job (2.9.4)

public class Job extends JobInfo

A Google BigQuery Job.

Objects of this class are immutable. To get a Job object with the most recent information use #reload. Job adds a layer of service-related functionality over JobInfo.

Inheritance

Object > JobInfo > Job

Inherited Members

JobInfo.<C>getConfiguration()

JobInfo.<S>getStatistics()

JobInfo.equals(Object)

JobInfo.getEtag()

JobInfo.getGeneratedId()

JobInfo.getJobId()

JobInfo.getSelfLink()

JobInfo.getStatus()

JobInfo.getUserEmail()

JobInfo.hashCode()

JobInfo.newBuilder(JobConfiguration)

JobInfo.of(JobConfiguration)

JobInfo.of(JobId,JobConfiguration)

JobInfo.toBuilder()

JobInfo.toString()

Object.clone()

Object.finalize()

Object.getClass()

Object.notify()

Object.notifyAll()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Methods

cancel()

public boolean cancel()

Sends a job cancel request.

Example of cancelling a job.


 if (job.cancel()) {
   return true; // job successfully cancelled
 } else {
   // job not found
 }

Returns

Type	Description
boolean	`true` if cancel request was sent successfully, `false` if job was not found

equals(Object obj)

public final boolean equals(Object obj)

Parameter

Name	Description
obj	`Object`

Returns

Type	Description
boolean

Overrides

JobInfo.equals(Object obj)

exists()

public boolean exists()

Checks if this job exists.

Example of checking that a job exists.


 if (!job.exists()) {
   // job doesn't exist
 }

Returns

Type	Description
boolean	`true` if this job exists, `false` otherwise

getBigQuery()

public BigQuery getBigQuery()

Returns the job's BigQuery object used to issue requests.

Returns

Type	Description
BigQuery

getQueryResults(BigQuery.QueryResultsOption[] options)

public TableResult getQueryResults(BigQuery.QueryResultsOption[] options)

Gets the query results of this job. This job must be of type JobConfiguration.Type.QUERY, otherwise this method will throw UnsupportedOperationException.

If the job hasn't finished, this method waits for the job to complete. However, the state of the current Job instance is not updated. To get the new state, call #waitFor(RetryOption...) or #reload(JobOption...).

Parameter

Name	Description
options	`QueryResultsOption[]`

Returns

Type	Description
TableResult

Exceptions

Type	Description
InterruptedException	upon failure
JobException	upon failure

hashCode()

public final int hashCode()

Returns

Type	Description
int

Overrides

JobInfo.hashCode()

isDone()

public boolean isDone()

Checks if this job has completed its execution, either failing or succeeding. If the job does not exist this method returns true.

Example of waiting for a job until it reports that it is done.


 while (!job.isDone()) {
   Thread.sleep(1000L);
 }

Returns

Type	Description
boolean	`true` if this job is in JobStatus.State#DONE state or if it does not exist, `false` if the state is not JobStatus.State#DONE

reload(BigQuery.JobOption[] options)

public Job reload(BigQuery.JobOption[] options)

Fetches current job's latest information. Returns null if the job does not exist.

Example of reloading all fields until job status is DONE.


 while (!JobStatus.State.DONE.equals(job.getStatus().getState())) {
   Thread.sleep(1000L);
   job = job.reload();
 }

Example of reloading status field until job status is DONE.


 while (!JobStatus.State.DONE.equals(job.getStatus().getState())) {
   Thread.sleep(1000L);
   job = job.reload(BigQuery.JobOption.fields(BigQuery.JobField.STATUS));
 }

Parameter

Name	Description
options	`JobOption[]` job options

Returns

Type	Description
Job	a `Job` object with latest information or `null` if not found

toBuilder()

public Job.Builder toBuilder()

Returns a builder for the job object.

Returns

Type	Description
Job.Builder

Overrides

JobInfo.toBuilder()

waitFor(RetryOption[] waitOptions)

public Job waitFor(RetryOption[] waitOptions)

Blocks until this job completes its execution, either failing or succeeding. This method returns current job's latest information. If the job no longer exists, this method returns null. By default, the job status is checked using jittered exponential backoff with 1 second as an initial delay, 2.0 as a backoff factor, 1 minute as maximum delay between polls, 12 hours as a total timeout and unlimited number of attempts.

Example usage of waitFor().


 Job completedJob = job.waitFor();
 if (completedJob == null) {
   // job no longer exists
 } else if (completedJob.getStatus().getError() != null) {
   // job failed, handle error
 } else {
   // job completed successfully
 }

Example usage of waitFor() with checking period and timeout.


 Job completedJob =
     job.waitFor(
         RetryOption.initialRetryDelay(Duration.ofSeconds(1)),
         RetryOption.totalTimeout(Duration.ofMinutes(1)));
 if (completedJob == null) {
   // job no longer exists
 } else if (completedJob.getStatus().getError() != null) {
   // job failed, handle error
 } else {
   // job completed successfully
 }

Parameter

Name	Description
waitOptions	`com.google.cloud.RetryOption[]` options to configure checking period and timeout

Returns

Type	Description
Job

Exceptions

Type	Description
InterruptedException	upon failure, check BigQueryException#getCause() for details