org.apache.tez.dag.app.dag

Interface Task

All Known Implementing Classes:

TaskImpl

public interface Task

Read only view of Task.

Method Summary

Modifier and Type	Method and Description
boolean	canCommit(TezTaskAttemptID taskAttemptID) Can the output of the taskAttempt be committed.
TaskAttempt	getAttempt(TezTaskAttemptID attemptID)
Map<TezTaskAttemptID,TaskAttempt>	getAttempts()
TaskSpec	getBaseTaskSpec()
TezCounters	getCounters()
List<String>	getDiagnostics()
long	getFinishTime()
long	getFirstAttemptStartTime()
Set<org.apache.hadoop.yarn.api.records.NodeId>	getNodesWithRunningAttempts()
float	getProgress()
TaskReport	getReport()
TaskState	getState()
TaskAttempt	getSuccessfulAttempt()
ArrayList<TezEvent>	getTaskAttemptTezEvents(TezTaskAttemptID attemptID, int fromEventId, int maxEvents)
TezTaskID	getTaskId()
TaskLocationHint	getTaskLocationHint()
Vertex	getVertex()
boolean	isFinished() Has Task reached the final state or not.
void	registerTezEvent(TezEvent tezEvent)

Method Detail

getTaskId

TezTaskID getTaskId()

getReport

TaskReport getReport()

getState

TaskState getState()

getCounters

TezCounters getCounters()

getProgress

float getProgress()

getAttempts

Map<TezTaskAttemptID,TaskAttempt> getAttempts()

getAttempt

TaskAttempt getAttempt(TezTaskAttemptID attemptID)

getSuccessfulAttempt

TaskAttempt getSuccessfulAttempt()

isFinished

boolean isFinished()

Has Task reached the final state or not.

canCommit

boolean canCommit(TezTaskAttemptID taskAttemptID)

Can the output of the taskAttempt be committed. Note that once the task gives a go for a commit, further canCommit requests from any other attempts should return false.

Parameters:

taskAttemptID -

Returns:

whether the attempt's output can be committed or not.

getVertex

Vertex getVertex()

getTaskAttemptTezEvents

ArrayList<TezEvent> getTaskAttemptTezEvents(TezTaskAttemptID attemptID,
                                            int fromEventId,
                                            int maxEvents)

getDiagnostics

List<String> getDiagnostics()

registerTezEvent

void registerTezEvent(TezEvent tezEvent)

getBaseTaskSpec

TaskSpec getBaseTaskSpec()

getTaskLocationHint

TaskLocationHint getTaskLocationHint()

getFirstAttemptStartTime

long getFirstAttemptStartTime()

getFinishTime

long getFinishTime()

getNodesWithRunningAttempts

Set<org.apache.hadoop.yarn.api.records.NodeId> getNodesWithRunningAttempts()

Returns:

set of nodes on which previous attempts were running on, at the time of latest attempt being scheduled.