io.prestosql.execution

Class SqlTask

java.lang.Object

io.prestosql.execution.SqlTask

public class SqlTask
extends Object

Method Summary

Modifier and Type	Method and Description
TaskInfo	abort()
TaskInfo	abortTaskResults(OutputBuffers.OutputBufferId bufferId)
void	acknowledgeTaskResults(OutputBuffers.OutputBufferId bufferId, long sequenceId)
void	addStateChangeListener(StateMachine.StateChangeListener<TaskState> stateChangeListener) Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor.
TaskInfo	cancel()
static SqlTask	createSqlTask(TaskId taskId, URI location, String nodeId, QueryContext queryContext, SqlTaskExecutionFactory sqlTaskExecutionFactory, ExecutorService taskNotificationExecutor, com.google.common.base.Function<SqlTask,?> onDone, io.airlift.units.DataSize maxBufferSize, io.airlift.stats.CounterStat failedTasks)
void	failed(Throwable cause)
SqlTaskIoStats	getIoStats()
QueryContext	getQueryContext()
TaskId	getTaskId()
TaskInfo	getTaskInfo()
com.google.common.util.concurrent.ListenableFuture<TaskInfo>	getTaskInfo(TaskState callersCurrentState)
String	getTaskInstanceId()
com.google.common.util.concurrent.ListenableFuture<BufferResult>	getTaskResults(OutputBuffers.OutputBufferId bufferId, long startingSequenceId, io.airlift.units.DataSize maxSize)
TaskStatus	getTaskStatus()
com.google.common.util.concurrent.ListenableFuture<TaskStatus>	getTaskStatus(TaskState callersCurrentState)
boolean	isOutputBufferOverutilized()
void	recordHeartbeat()
String	toString()
TaskInfo	updateTask(Session session, Optional<PlanFragment> fragment, List<TaskSource> sources, OutputBuffers outputBuffers, OptionalInt totalPartitions)

Methods inherited from class java.lang.Object

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

Method Detail

createSqlTask

public static SqlTask createSqlTask(TaskId taskId,
                                    URI location,
                                    String nodeId,
                                    QueryContext queryContext,
                                    SqlTaskExecutionFactory sqlTaskExecutionFactory,
                                    ExecutorService taskNotificationExecutor,
                                    com.google.common.base.Function<SqlTask,?> onDone,
                                    io.airlift.units.DataSize maxBufferSize,
                                    io.airlift.stats.CounterStat failedTasks)

isOutputBufferOverutilized

public boolean isOutputBufferOverutilized()

getIoStats

public SqlTaskIoStats getIoStats()

getTaskId

public TaskId getTaskId()

getTaskInstanceId

public String getTaskInstanceId()

recordHeartbeat

public void recordHeartbeat()

getTaskInfo

public TaskInfo getTaskInfo()

getTaskStatus

public TaskStatus getTaskStatus()

getTaskStatus

public com.google.common.util.concurrent.ListenableFuture<TaskStatus> getTaskStatus(TaskState callersCurrentState)

getTaskInfo

public com.google.common.util.concurrent.ListenableFuture<TaskInfo> getTaskInfo(TaskState callersCurrentState)

updateTask

public TaskInfo updateTask(Session session,
                           Optional<PlanFragment> fragment,
                           List<TaskSource> sources,
                           OutputBuffers outputBuffers,
                           OptionalInt totalPartitions)

getTaskResults

public com.google.common.util.concurrent.ListenableFuture<BufferResult> getTaskResults(OutputBuffers.OutputBufferId bufferId,
                                                                                       long startingSequenceId,
                                                                                       io.airlift.units.DataSize maxSize)

acknowledgeTaskResults

public void acknowledgeTaskResults(OutputBuffers.OutputBufferId bufferId,
                                   long sequenceId)

abortTaskResults

public TaskInfo abortTaskResults(OutputBuffers.OutputBufferId bufferId)

failed

public void failed(Throwable cause)

cancel

public TaskInfo cancel()

abort

public TaskInfo abort()

toString

public String toString()

Overrides:

toString in class Object

addStateChangeListener

public void addStateChangeListener(StateMachine.StateChangeListener<TaskState> stateChangeListener)

Listener is always notified asynchronously using a dedicated notification thread pool so, care should be taken to avoid leaking this when adding a listener in a constructor. Additionally, it is possible notifications are observed out of order due to the asynchronous execution.

getQueryContext

public QueryContext getQueryContext()